{ bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}]; A 。, 平面中運動的物體,其速度也可以採用極坐標來表示(依照方便來選擇座標系分解)。極坐標下的速度可以分解為兩個部分:徑向速度,即物體到原點的距離的變化率,以及角速度,即物體位置的輻角隨時間的變化率。假設物體的位置用極坐標表示為 { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, "noPingback": true, z v { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, ) t initial [final] velocity. { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, the speed at which something is traveling: The wind velocity recorded at the airport was 78 miles per hour at 4 p.m. (Cambridge Academic Content Dictionary からの velocity の定義 © Cambridge University Press) { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, {\displaystyle {\boldsymbol {r}}=\rho {\boldsymbol {e}}_{\rho }+z{\boldsymbol {e}}_{z}} ρ v Δ googletag.pubads().collapseEmptyDivs(false); v = s / t (where v and s are vectors) Where (using SI units): v is the velocity of the body in metres per second (ms ^-1) s is the displacement of the body in metres (m) t is the time taken to travel from the initial point to the final point in seconds (s) ,那麼經過時間 ,那麼A相對於B的速度 expires: 60 {\displaystyle {\boldsymbol {v}}_{B/A}} googletag.pubads().addEventListener('slotRenderEnded', function(event) { if (!event.isEmpty && event.slot.renderCallback) { event.slot.renderCallback(event); } }); { bidder: 'ix', params: { siteId: '195467', size: [300, 250] }}, 初[終]速度. googletag.cmd.push(function() { dfpSlots['rightslot'] = googletag.defineSlot('/2863368/rightslot', [[300, 250]], 'ad_rightslot').defineSizeMapping(mapping_rightslot).setTargeting('sri', '0').setTargeting('vp', 'mid').setTargeting('hp', 'right').addService(googletag.pubads()); {\displaystyle v_{x},v_{y},v_{z}} (directional speed) (物理) 速度 名 品詞-名詞: 人、もの、場所、時間、概念などを表す語: The police were using a speed gun to measure the velocity of moving vehicles. iasLog("criterion : cdo_pc = dictionary"); ∫ a 0 ( v v 的變化率,也就是對時間的導數[2]:25[3]:113:, 瞬時速度的大小(向量的模長)等於瞬時速率;瞬時速度的方向則是物體運動曲線的切線方向: { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_btmslot_300x250' }}, 最高速度. v { bidder: 'openx', params: { unit: '539971081', delDomain: 'idm-d.openx.net' }}, var pbjs = pbjs || {}; dfpSlots['topslot_a'] = googletag.defineSlot('/2863368/topslot', [], 'ad_topslot_a').defineSizeMapping(mapping_topslot_a).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'center').addService(googletag.pubads()); { bidder: 'ix', params: { siteId: '195467', size: [320, 100] }}, ∫ googletag.pubads().setTargeting("cdo_pc", "dictionary"); + x v t B + { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, {\displaystyle \Delta t} v x {\displaystyle {\boldsymbol {v}}} pbjsCfg = { {\displaystyle c} { bidder: 'sovrn', params: { tagid: '387233' }}, 「keep within [observe] the speed limit. "error": true, 初 [ 終 ]速度. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_topslot_728x90' }}, Δ { bidder: 'appnexus', params: { placementId: '11653860' }}, 是: "loggedIn": false { bidder: 'ix', params: { siteId: '195451', size: [320, 50] }}, f 英語 英和 英韓 英西 和英 西英. var mapping_topslot_a = googletag.sizeMapping().addSize([746, 0], []).addSize([0, 550], [[300, 250]]).addSize([0, 0], [[300, 50], [320, 50], [320, 100]]).build(); e 是它在這段時間裡的位移 {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, 日本語. ga('set', 'dimension3', "default"); bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, : colloquial (speed, rapidity) (運動などの) = {code: 'ad_leftslot', pubstack: { adUnitName: 'cdo_leftslot', adUnitPath: '/2863368/leftslot' }, mediaTypes: { banner: { sizes: [[120, 600], [160, 600], [300, 600]] } }, { bidder: 'sovrn', params: { tagid: '346693' }}, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}]; // FIXME: (temporary) - send ad requests only if PlusPopup is not shown v / t 物體在一段時間 var pbTabletSlots = [ 'pa pdd chac-sb tc-bd bw hbr-20 hbss lpt-25' : 'hdn'">. All software created at the Velocity project is available under the Apache Software License and free of charge for the public. θ 0 Δ {\displaystyle {\boldsymbol {v}}_{B/A}={\boldsymbol {v}}_{B}-{\boldsymbol {v}}_{A}} 稱為橫向速度[2]:46。速度的極坐標描述是依賴於物體位置的描述,因為 { bidder: 'ix', params: { siteId: '195451', size: [300, 50] }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, },{ Δ { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_leftslot_160x600' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, e The velocity of a body not subject to external forces remains constant. {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 50], [300, 50]] } }, この「速度」は、英語では「speed」です。もっと詳しく、自動車がどっち方向に向かっているかも含めて「自動車の速度は 東向きに 時速60キロメートル です」と言ったとき、この「速度」は、英語では「velocity … googletag.pubads().setTargeting("cdo_dc", "english-chinese-traditional"); {\displaystyle \Delta {\boldsymbol {r}}} {\displaystyle t} v ブリタニカ国際大百科事典 小項目事典 の解説. 2 {\displaystyle v} z googletag.pubads().setTargeting('cdo_alc_pr', pl_p.split(",")); { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, { bidder: 'sovrn', params: { tagid: '387233' }}, , expires: 365 { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, at a high [ low] speed. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_leftslot' }}, z { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, 粒子速度という,媒質粒子が音波で振動する瞬間速度 - edr日英対訳辞書 a unit of velocity based on the ratio of the speed of a moving body to the speed of sound , called Mach 例文帳に追加 initial velocity; accelerated velocity; 参照 . 'min': 8.50, θ Δ {\displaystyle \Delta t} {\displaystyle r{\frac {\mathrm {d} \theta }{\mathrm {d} t}}{\boldsymbol {e}}_{\theta }} velocity. iasLog("exclusion label : resp"); 是向量,表示物體的位置 vector 「 是物體運動軌跡曲線在這一點的切向單位向量[2]:40。, 直線運動是指物體(通常簡化成質點)沿著直線運動,當中並無方向的變化。通常會為這個直線指定一個正方向和一個原點,以方便描述。如果物體的速度方向與正方向相同,則記其速度為其速率(正數),反之則記其速度為速率的相反數(負數)。這種記法下,物體的位置、位移和速度都可以用實數來表示。假設物體在初始時刻 0 和時間間隔之比[2]:24:, 其中的位移 v syncDelay: 3000 { bidder: 'openx', params: { unit: '539971081', delDomain: 'idm-d.openx.net' }}, { bidder: 'ix', params: { siteId: '194852', size: [300, 250] }}, r {\displaystyle t_{0}} , t { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, {\displaystyle {\boldsymbol {x}}_{0}} }); {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, , 想要 … { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_topslot_mobile_flex' }}, t googletag.pubads().setTargeting("cdo_l", "zh-hant"); 是它在這段時間裡的位移 iasLog("criterion : cdo_ei = velocity"); velocity n noun: Refers to person, place, thing, quality, etc. 垂直速度表(英語:variometer)也稱上升和下降率指示器(rate of climb and descent indicator,縮寫RCDI)、爬升率指示器(rate-of-climb indicator)、垂直速度指示器(vertical speed indicator,VSI)或垂直速率指示器(vertical velocity indicator,VVI),是向飛行員告知航空器的上升或下降率的一種飛行儀 … ,那麼稱之為勻變速直線運動。經過時間 {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, 2 / velocity / vəlásəti, vəlɔ́səti. 就是A在B靜止的參考系中的速度。古典物理學中(非相對論框架), {\displaystyle \Delta t} , 'cap': true { bidder: 'ix', params: { siteId: '195464', size: [160, 600] }}, = u {\displaystyle v} googletag.pubads().enableSingleRequest(); },{ − bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, 高 [ 低 ]速度で. { bidder: 'ix', params: { siteId: '195467', size: [300, 50] }}, var mapping_houseslot_b = googletag.sizeMapping().addSize([963, 0], []).addSize([0, 0], [300, 250]).build(); }, t },{ t bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, r }, , T t "sign-up": "https://dictionary.cambridge.org/zht/auth/signup?rid=READER_ID", 11) 瞬間の速度(しゅんかんのそくど) = instantaneous velocity = velocity at any instant of time or point along a path (経路に沿って) 12) 合成速度(ごうせいそくど)= resultant (composite) velocity = sum of two or more velocities (e.g., A boat on a calm lake is moving east at { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_btmslot_mobile_flex' }}, e 関連画像 *星の空間速度、視線速度、接線速度、固有運動の説明図。 郷田直輝「宇宙における距離の測定」、シリーズ現代の天文学第1巻、岡村・池内・海部・佐藤・永原編『人類の住む宇宙』第2版 2.4節 図2.14(日本評論社) 。[2]:48,透過向量的轉換,利用相對速度來解決問題可以將問題簡化許多。, 古典物理學中的相對速度變換公式是坐標系做伽利略變換的結果。相對論框架中,需要用勞侖茲變換代替伽利略變換,因此相對速度的變換公式也不同。假設物體A的速度是 name: "identityLink", friendly or making you feel welcomeブログ the speed at which an object is travelling. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162050', zoneId: '776336', position: 'btf' }}, 'min': 3.05, e r φ t velocityで始まる言葉の辞書すべての検索結果。velocity - goo辞書は無料で使える日本最大級の辞書サービスです。 r x { bidder: 'openx', params: { unit: '539971065', delDomain: 'idm-d.openx.net' }}, { bidder: 'ix', params: { siteId: '195464', size: [300, 600] }}, e {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/2863368/rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, const customGranularity = { { bidder: 'openx', params: { unit: '539971065', delDomain: 'idm-d.openx.net' }}, T v 'buckets': [{ e bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, , 從開始到結束的變化[2]:23。平均速度的大小一般不是物體在這段時間裡的平均速率。比如一個以恆定速率做圓周運動一周的物體,由於最後的位置和初始的位置相同,總位移是0,所以平均速度是0,但平均速率不等於0。平均速度總小於等於平均速率。, 平均速度是對物體移動快慢和方向的粗略量度,物體在特定時刻運動的快慢和方向則用瞬時速度表示。物體在某一時刻 = {\displaystyle {\boldsymbol {r}}=r{\boldsymbol {e}}_{r}. t velocityの日本語への翻訳をチェックしましょう。文章の翻訳例velocity を見て、発音を聞き、文法を学びます。 "login": { bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, t {\displaystyle {\boldsymbol {v}}=(v_{x},v_{y},v_{z})} 1 N {\displaystyle {\boldsymbol {e}}_{r},{\boldsymbol {e}}_{\theta }} {\displaystyle {\boldsymbol {v}}_{A}} θ ,即半徑乘以角速度。, 如果物體在三維空間中運動,可以加入縱坐標軸z,建立圓柱坐標系: ,則物體的位置可以寫成: }] a 速度はだいたい 30km/h である。 車が時速 30km で走る。 A car moves at a rate of 30km/h. 2 x { bidder: 'ix', params: { siteId: '195466', size: [728, 90] }}, 0 the initial [ final] velocity. 法定速度. Δ { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, r ga('create', 'UA-31379-3',{cookieDomain:'dictionary.cambridge.org',siteSpeedSampleRate: 10}); priceGranularity: customGranularity, e , {code: 'ad_topslot_a', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[300, 50], [320, 50], [320, 100]] } }, , ) t English to Japanese translations from the Longman English-Japanese Dictionary. e θ 的瞬時速度 {code: 'ad_leftslot', pubstack: { adUnitName: 'cdo_leftslot', adUnitPath: '/2863368/leftslot' }, mediaTypes: { banner: { sizes: [[120, 600], [160, 600]] } }, { bidder: 'appnexus', params: { placementId: '11653860' }}, Δ { bidder: 'appnexus', params: { placementId: '11653860' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, { bidder: 'ix', params: { siteId: '195464', size: [120, 600] }}, {\displaystyle {\boldsymbol {u}}=(u_{x},0,0)} ( { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, {\displaystyle {\boldsymbol {r}}} {code: 'ad_topslot_b', pubstack: { adUnitName: 'cdo_topslot', adUnitPath: '/2863368/topslot' }, mediaTypes: { banner: { sizes: [[728, 90]] } }, if(!isPlusPopupShown()) + d Δ 以後,物體的位置 'increment': 1, t t = x userIds: [{ {\displaystyle \Delta {\boldsymbol {r}}=v\Delta t} t v r