前言：本文简要介绍MCEVOY“C”型双闸板阀的现场操作及定期保养中的几个注意事项。
The paper describes some precautions in field operation and regular maintenance of MCEVOY "C" double ram valve.
前言：本文简要介绍MCEVOY“C”型双闸板阀的现场操作及定期保养中的几个注意事项。
The paper describes some precautions in field operation and regular maintenance of MCEVOY "C" double ram valve.
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