Thermal mass flow sensor has unique constant temperature principium as mathematical model for measuring medium mass flow without compensation of temperature and pressure.

采用独特的恒温原理建立数学模型，测量出介质的质量流量，无须温度和压力补偿。

youdao

People with a large amount of lean muscle mass, such as athletes, can show a large body mass index without having an unhealthy level of fat.

但是肌肉发达的人（如运动员）体质指数比较大，但不会有多余的脂肪。

youdao

Suddenly,without warning, a heavy mass of snow dropped down.

VOA: special.2010.05.01

You can't just start mass producing these drugs without paying a licensing fee."

你们不能就这样大规模生产,却不付任何专利费“

耶鲁公开课 - 公正课程节选

First one says, if you knew the force acting on any body, without going into what caused the force, then you may set that force equal the mass times acceleration of the body.

第一部分是,如果你知道作用在任一物体上的力,无论这个力的来源是什么,都可以令力等于质量乘以物体的加速度

耶鲁公开课 - 基础物理课程节选

Urbanization could not have occurred as rapidly without mass steel production enabling skyscraper construction.

FORBES: Jobs of the Future: Why the Political Class Should Read Michael Saylor's "The Mobile Wave"

First, it could not have happened without mass prosperity.

ECONOMIST: How mass affluence shapes American politics and culture

Even in cultures without access to mass media, the optimum waist-to-hip ratio for women is around 0.7, which corresponds most closely to an hourglass shape, and is linked to fertility.

ECONOMIST: Baby you can drive my genes