EXTINGUISHING MEDIA: Water spray, dry chemical powder, foam or carbon dioxide.

灭火剂：雾状水，干粉，泡沫或二氧化碳。

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EMS, UPS, TNT, FEDEX has many years of good work experience in chemical, chemical powder, operation without any appraisal report, Security.

EMS特快专递，UPS公司，TNT和联邦快递在化学良好的工作经验，化工粉末，无任何评估报告，安全运行多年。

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The paper expounds the functions of surface treatment and spinning mechanisms of top roller in view of the applications of chemical powder and radiation pigment;

本文阐述了胶辊表面处理的作用与纺纱机理；介绍了化学涂料、幅照涂料、 粉末涂料的技术应用与体会；

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The subsequent analysis will reveal the precise chemical and mineralogical compositions present in the powder, giving scientists clues as to the likely conditions under which the rock formed.

BBC: Curiosity Mars rover spins its rock drill

It may be several weeks before they can analyze the powder using the craft's onboard chemical test-kit.

WSJ: Rover on Mars Extracts First Rock-Core Sample

Similar worries seem to have prompted the arrest in November of Zhao Lianhai, who had been campaigning on behalf of the parents of some 300, 000 children who were affected by milk powder tainted with melamine, an industrial chemical, in 2008.

ECONOMIST: Dissent becomes even more dangerous