Pulp-molding packaging products (pulp mold) are made of recycled trash paper, and used in cushion package and have the advantages of light mass, easy decomposability, good ventilation and so on.

纸浆模塑工业包装制品（简称纸模）主要用于缓冲包装，它以回收的废弃纸张为原材料，具有质轻、易降解、透气性好等优点。

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MMIC, having advantages of small size, light mass, high reliability and excellent reproducibility, finds use in a variety of microwave system, especially in airborne radar and space applications.

具有尺寸小、重量轻、可靠性高、生产重复性好等优点，广泛应用于各种微波系统，特别是机载雷达和卫星通信等方面。

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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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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