retainer seal 中文意思是什麼
retainer seal
解釋
護圈密封-
If necessary, the stem and stem seal may be removed from the bonnet by removing the retainer ring and handle and screwing the stem out the under - side of the bonnet
如果必要的話,閥桿和閥桿密封可能要從閥帽上拆卸下來,要在閥帽的下方先拆卸擋圈和手柄,以及閥座上的螺絲。
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