Aerogen Micro Organizations Algae microorganisms in the water also populate overpopulate because of the surplus Nitrogennitrogen.

水中的藻类微物过于密集式由于过量的氮。

The paper introduces the corrosion prevention of the automatic instruments for thermopair,resistance thermometer, transmitter, flowmeter levelmeter in Chemical processes.

介绍工业自动化仪表在氮，产过程中，对检控制仪表，、阻、变送器、流量计、液位计的选择。