mass n. 彌撒;彌撒的儀式[禱告、音樂];彌撒曲。 a high [solemn] Mass (有燒香、奏樂等的)大彌撒。 a low [private] Mass (無燒香、奏樂的)小彌撒。 by the Mass 一定,的確。 say [read] Mass 作彌撒,念經(jīng)。 n. 1.塊,堆,團。 2.群眾,集團;〔the masses〕群眾;民眾。 3.大量;大宗;眾多;〔the mass〕大部分,大半;主體;總體。 4.【物理學(xué)】質(zhì)量。 5.【軍事】集團縱隊,密集隊形。 6.【礦物】體。 a mass of earth 一大塊泥土。 a mass of letters 一大堆信件。 The masses have boundless creative power. 人民群眾有無限的創(chuàng)造力。 a mass of manoeuvre 實施機動集團。 proper mass 靜質(zhì)量。 the masses 群眾,大眾。 be mass of 一團…,全身…,遍體…(He is a mass of bruises. 他遍體鱗傷)。 from the masses, to the masses 從群眾中來,到群眾中去。 in the mass 整個兒地;總體上,合計。 the (great) mass of... …的大部分。 to be at one with the masses 同群眾打成一片。 vt. 使成一團;集中(力量等);【軍事】使密集。 vi. 集中,聚集。 massed body 【軍事】密集部隊。 massed formation 【軍事】密集隊形。 mass action 【物理學(xué)】質(zhì)量作用;濃度作用。
However , the transverse one can select non - negligible large sizes p . in addition , larger invariant mass m scans smaller y ' q separations 另外,輕子對不變質(zhì)量m越大,對應(yīng)權(quán)函數(shù)極大值的越小。
The invariant mass spectrum of dimuons can be used to examine the suppression of j / production . j / w consists of quark and anti - quark . its size is small enough that perturbative theory is meaningful and is not small enough that non - perturbative effect can be completely ignored 它由夸克和反夸克組成,它的尺寸足夠小從而微擾理論有意義,但是j的尺寸又沒有小到非微擾效應(yīng)完全可以忽略的程度,因此j介于微擾的夸克和膠子以及非微擾的強子之間。
With calculating one can observe the n * ( 1440 ) resonance peak obviously in the invariant mass spectrum of n system , and in daliz plots the event number distribution is density , there are no such phenomenons in other composed systems . all of these things we have got will be helpful to the imminent experimental detection 通過計算我們可以得到末態(tài)各個粒子各種可能的信息,在n的不變質(zhì)量譜上有明顯的共振峰出現(xiàn),在達里茲圖的相應(yīng)位置處事件分布密集,而在其它組態(tài)中卻沒有這種現(xiàn)象,這都說明了n ~ * ( 1440 )的產(chǎn)生。
百科解釋
The invariant mass, rest mass, intrinsic mass, proper mass, or (in the case of bound systems or objects observed in their center of momentum frame) simply mass, is a characteristic of the total energy and momentum of an object or a system of objects that is the same in all frames of reference related by Lorentz transformations. If a center of momentum frame exists for the system, then the invariant mass of a system is simply the total energy divided by the speed of light squared.