在这方面，汞不同于其他类地行星。
In this, mercury differs from the other terrestrial planets.
本文以高压汞灯、太阳光为光源，研究了酰胺类除草剂乙草胺在水溶液中的光化学降解。
The direct photolysis of Anilide herbicides acetochlor in aqueous solution irradiated by high pressure mercury lamp and sunlight was investigated.
金属类污染指标有总汞、总铁、总锰；
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