墨脫需牢記填料改集式密封的這些安裝要領
常(chang)用的(de)密(mi)封(feng)(feng)(feng)型(xing)式(shi)主(zhu)要有(you)填(tian)料密(mi)封(feng)(feng)(feng)、機(ji)械(xie)密(mi)封(feng)(feng)(feng)等,填(tian)料密(mi)封(feng)(feng)(feng)。填(tian)料改集式(shi)密(mi)封(feng)(feng)(feng)是一種(zhong)較為(wei)原始(shi)的(de)接觸式(shi)密(mi)封(feng)(feng)(feng),具有(you)結構簡單、成(cheng)本低(di)、更(geng)換簡便等優點,由(you)于(yu)這些優點,因而(er)在石油工(gong)業...