The polyethylene foam is an excellent performance sealing material for concrete, it possesses the strong points of light mass, high strength and durability.

发泡聚乙烯板材是一种性能优良的混凝土填缝板材料，具有轻质、高强、耐久性优异的特点。

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The coagulative precipitation-adsorption with the crashed light mass brick or coal ash can be utilized in treatment of the wastewater from paperboard coating plant.

用混凝沉淀-轻质砖碎料或粉煤灰吸附处理灰纸板涂布废水。

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Because of the light mass, the recoil effect is strong after the particle is emitted, so the recoil effect is must taken into account to maintain the energy balance.

由于轻核质量轻，发射粒子后反冲效应很强，理论计算中还严格考虑了反冲效应的影响，从而保证了能量守恒。

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It involves the relationship of energy, mass and the speed of light, written as the letter c.

VOA: special.2010.07.16

We've got wind, we've got a primeval chaotic, Watery mass or deep, and then surprise, There's just a word,"Let there be light."

我们有了气流，有了原始的混乱，狂放的水流，混沌，但奇怪的是，只有一句话，“要有光“

耶鲁公开课 - 旧约导论课程节选

And we don't put the mass of the electrons because they are so light in comparison.

我们不能得到电子的质量,因为它们相较起来太轻了。

麻省理工公开课 - 固态化学导论课程节选

These products also enable system builders to build high-performance, high-capacity systems, including new thin and light laptops, at mass-market price points.

ENGADGET: Seagate ships its first desktop hybrid drive, third-gen laptop models

That change in perception is providing more momentum for some cities that were already moving away from six-lane highways and suburbs dozens of miles apart, to a series of urban centers connected by light rail and other mass transit systems.

CNN: U.S. cities scrambling to meet rising mass transit demands

Sure enough, this light was bent by the mass of the sun, confirming Einstein's theory.

ECONOMIST: Spotting dark matter, at last