... 塞头 Plug 自吸筒 Self-Priming Cover 自吸筒螺丝 Self-Priming Cover Screw ...
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Self-Priming Cover Screw 自吸筒螺丝
self-priming cover
自吸盖
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Normally, the cumulated water in top cover is drained to cumulated water well by gravity drainage, in emergency situation, the water would be drained by the self-priming pump installed in gallery.
顶盖内积水正常情况下通过自流排水排至积水井，紧急状态下通过装在廊道内的自吸泵排水。
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