The methods of separation, enrichment, and analysis of trace mercury in water samples in recent years were reviewed in the present paper.

该文综述了近年来水样中痕量汞的分离富集与分析测定方法。

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For protecting environment from mercury, there were low mercury contained paper liner and bismuth contained mercury free paper liner.

为了减少汞对环境污染，现已有低汞浆层纸和无汞含铋浆层纸。

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In the paper, the factors that influence the uncertainty of mercury measurement in offshore water in East China Sea were analyzed by using the universal method.

采用国际通用的方法分析探讨了东海近海水质总汞测定中不确定度的影响因素。

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Before the introduction of magnetic tape, digital storage for early computers used punched cards, paper tape as well as more exotic technologies such as mercury delay lines and the phosphors on cathode ray tubes.

FORBES: Magnetic Tape Turns 60

But full competition did not hit the British market until March 1991, when the government issued a white paper on telecoms policy, which effectively brought to an end the duopoly shared by BT and Mercury.

BBC: BT: From telegraphs to the internet