quantity n. 1.量 (opp. quality); 分量,數(shù)量;額;【物理學(xué)】值,參量。 2.〔pl.〕大量,大宗,大批,許多。 3.定量,定額。 4.【數(shù)學(xué)】量;表示量的數(shù)字[符號];【邏輯學(xué)】(名詞、特別是命題主語的)量。 5.【音韻學(xué)】音節(jié)的長短;表示音節(jié)長短的符號;【語音】(元[母]、音節(jié)等的)音量。 6.【法律】期限。 a known quantity 已知數(shù)。 an unknown quantity 未知數(shù);〔比喻〕難預(yù)測的人[物]。 a negligible quantity 可忽略的量;〔比喻〕無足輕重的人〔物〕;可忽略的因素。 a quantity of 一些。 in quantities 大量。 in quantity 很多。
Angular momentum is an axial vector quantity . 角動量是一種軸矢量。
Isospin is a vector quantity . 同位旋是矢量。
A vector quantity is an entity with a magnitude and a direction in space . 矢量是空間中既具有大小又具有方向的量。
Two vector quantities which are equal need not have the same physical effect . 兩個相等的矢量并不一定有相同的物理效果。
A vector quantity is one whose direction as well as its magnitude is significant . 矢量是一個其方向和其大小同樣有意義的量。
A vector quantity whose magnitude is a body ' s speed and whose direction is the body ' s direction of motion 速度一種向量,其量值為物體的速率,其方向為物體運動的方向
3 . use characteristic vector quantity of normal situation with leak characteristic vector quantity of situation compare , adopting valve method determinant the leakage of pipelines 本文應(yīng)用正常情況下的特征向量與泄漏情況的特征向量進行比較,并且采用閥值的方法判斷泄漏故障的發(fā)生。
It synthesizes the excellence of wave coding and parameter coding , adopts vector quantity , analyse - synthesize , perceptual weighting , therefore , gains good speech coding quality at 8kbit / s . cs - acelp can be used in individual telecom , iphone , c / n , microwave telecom and isdn Cs - acelp算法綜合了波形編碼和參數(shù)編碼的優(yōu)點,以自適應(yīng)預(yù)測編碼技術(shù)為基礎(chǔ),采用了矢量量化、合成分析和感覺加權(quán)等技術(shù),在8kbit / s速率上獲得了較高的語音編碼質(zhì)量。
Compared with the pressure hydrophone , vector transducer can provide both the information about pressure ( scalar quantity ) and particle velocity ( vector quantity ) of the sound field , which offers more possibilities for signal processing . so vector transducer and its signal processing have attracted the attention of researchers both native and foreign . in this thesis , a method of correlation equations for pressure gradient transducer is presented , and the estimation of multi - signal parameters with single vector transducer is given 與傳統(tǒng)的聲壓水聽器相比,矢量水聽器既能獲得聲場中的聲壓這一標(biāo)量信息,又能獲得聲場中質(zhì)點振速這一矢量信息,這為其信號處理帶來更大的空間,因此矢量水聽器及其相應(yīng)的聯(lián)合信息處理技術(shù)日益成為國內(nèi)外科技工作者們研究的熱點。