一级毛片视频免费观看,午夜免费成人,欧美性猛烈xxxx视频少妇少,我要看特级毛片,av毛片观看,一级做a免费看,国产精品毛片在线

　　Product type: long-acting copper sulfate reference electrode

　　Implementation standard: GB/T467-1997

　　Main performance: long service life and stable signal setting, it is an ideal cathode protection potential measurement tool.

　　Scope of application: Measuring the accurate potential of the protected structure; Signal source for potentiostat automatic control in impressed current cathodic protection; It can be buried in the bottom of a large container and other difficult to measure the detection data.

Detailed introduction:

　　The application range of single pottery type long-acting buried copper sulfate reference electrode:

　　1. It can be used to measure the exact potential of the protected structure.

　　2, impressed current cathodic protection can be used as a signal source for the automatic control of potentiostat.

　　3, can be buried in the bottom of large containers such as: large oil storage tanks, chemical containers at the bottom of the need to detect data and difficult to measure the position.

　　4, long service life and stable signal, is an ideal cathode protection potential measurement tool.