The cable is owned by the Georgian railway network. It is heavily protected, but landslides or heavy rain may have exposed it to scavengers.
电缆属于格鲁吉亚铁路网所有。是被高度保护的,但是山体滑坡或暴雨可能使其被拾荒者发现。
Boxes can be supplied factory prewired with high temperature lead wire protected with armor cable or wire braid.
接线盒可在工厂预先配有高温引线,引线由铠装电缆或金属编织来保护。
Mains and external signal cables longer than 10 m shall in areas where lightning is frequent be protected with an external lightning surge protection at the cable entrance to the building.
主线和外部信号线超过10米的,在线进入大楼的入口处时设置避雷保护,避免雷击。
The gob-side entry driving in the fully-mechanized coal winning face can be protected successfully by using the anchored cable and rod supporting system.
采用锚杆、锚索支护系统成功地维护了综放沿空掘巷,保证了综放面顺利回采。
The gob-side entry driving in the fully-mechanized coal winning face can be protected successfully by using the anchored cable and rod supporting system.
采用锚杆、锚索支护系统成功地维护了综放沿空掘巷,保证了综放面顺利回采。
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