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.
衬套以防止螺栓孔在数个油道之间形成连通的方式安装到所述螺栓孔中。
A bush is fitted into the bolt hole in such a manner as to prevent the bolt hole from establishing communication between the plurality of oil passages.
本实用新型在拆卸孔的孔口设有盖子，可以防止转向架在正常运用中杂物、污物等进入纵梁内腔。
Covers are arranged on the openings of the dismounting holes of the bogie truck framework and can prevent useless substance, dirt, etc. into the inner Spaces of the longitudinal beams.
本实用新型在拆卸孔的孔口设有盖子，可以防止转向架在正常运用中杂物、污物等进入纵梁内腔。
Covers are arranged on the openings of the dismounting holes of the bogie truck framework and can prevent useless substance, dirt, etc. into the inner Spaces of the longitudinal beams.
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