The text introduced many reconstructions of pump which should be attended in the persulfate production,by this way the problems maked by unperfectly using or building up were solved.

  • 本文介绍了过硫酸盐生产用泵的一系列改造,解决工艺流程的泵安装使用中的一系列不正确的问题。
目录 查词历史