The major components of PM are sulfate, nitrates, ammonia, sodium chloride, carbon, mineral dust and water.

它的主要组成成分是硫酸盐、硝酸盐、氨、氯化钠、碳、矿物粉尘和水。

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Substances in human skin oil are significant components of indoor dust, a new study found.

一项最新的研究发现，在人类的肌肤油脂中含有某些物质，它们是室内灰尘的重要组成成分。

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Lockheed Martin's design features internal cabling, rapid stowage and shielding for vital components against sand, dust, rain and extreme temperatures on the battlefield.

洛克希德·马丁公司的设计特点还包括内部布线、快速装载以及对于沙、灰尘、雨水和战场极端温度条件下的重要部分的防护。

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If the thing has been built with components from the Mars Rover, a bit of heat and dust shouldn't faze it.

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Its fully sealed design protects internal components, making it drop-proof, shock-proof, spill-proof, dust-proof, and watertight.

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