... tracer?gas 示踪气 tracer for gas气体示踪剂 radioactive tracer gas 放射性示踪气体 ...
双语例句
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A tracer monitoring for the landfill gas concentration variation on the condition of leachate recycling as compared with that of the un-recycling in semi-aerobic landfill.
For improving the air quality, the concepts of age of air are introduced and the solutions of age of air and ventilation efficiency are obtained by using tracergas concentration of…