橡胶皮保护孔的边缘,以防止损坏电线电缆。
Rims of holes shall be protected by rubber to avoid any damage.
所有的实习孔倒角对内部的优势,以防止破坏O型环在安装过程中的喷嘴和舱壁见工程。
All of the attachment holes are chamfered on the inside edges to prevent damaging the O-rings during installation of the nozzle and bulkhead see Eng.
靠近洗手水池的顶部开有一个孔以防止水溢出。
Bathroom sinks have a little hole near the top that helps prevent overflows.
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