M The object has a mass m.

该物体质量为。

youdao

L The rod has mass m and it has length l.

杆子质量为M，长度为。

youdao

The mass m is assumed to be constant.

我们假设质量m是不变的。

youdao

"I offer Catholic Mass,' cause I'm a Catholic priest by profession,and so it is actually the feast day of Mary,Mother of God.

VOA: special.2009.12.28

It's a particle of mass m and momentum p has this energy so you solve for the energy, you get two answers.

一个质量为m,动量为p的粒子,有这么大的能量,你解出能量,得到两个解

耶鲁公开课 - 基础物理课程节选

With some degree of confidence, I'm working with a reliable spring and then I will get the mass of the elephant.

这时我就对弹簧有信心了,我用的是一个可靠的弹簧,我能测出大象的质量

耶鲁公开课 - 基础物理课程节选

The comedown of the haughty Bay Area and its critical mass of M.

FORBES: Paradigm shift

Days begin, for instance, with a 6:30 a.m. breakfast, Mass at 8:15 a.m. and a first vote at 9:30.

WSJ: Cardinals Gather, Facing Varied Agendas

I'm going to Mass this evening and offering it for him.

NPR: Kennedy's Illness Casts Pall over Congress