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In the underground ventilation system by multi-stage fan stations,the fan stations in the stopes were destroied frequently. 文中阐述了在井下多级机站通风系统中,采场的机站常被爆破冲击波破坏;
In response, rescue workers in a summary of the underground ventilation system, have all been evacuated to a safe area, after the bombing of the roadway to exhaust treatment. 对此，救援人员在井下建立了简易的通风系统后，已全部撤到了安全区，对爆炸后的巷道进行排风处理。
The plan of abandon of underground stopes is made according to ore reserves and status of ventilation.Feasibility study of optimizing underground ventilation system was conducted. 介绍矿井储量及通风状况,核定采区储量,确定采区报废方案,并对矿井通风系统优化进行可行性论证。
Electrical interlocking design for the underground ventilation doors 井下风门电气联锁设计
Coalmine underground ventilation technology to be used in municipal works 煤矿井下通风技术在市政工程中的应用
Recently they have laid an underground pipeline. 最近他们铺设了一条地下管道。
The missile is delivered from underground. 这种导弹由地下发射。
This is a room with good ventilation. 这是个通风良好的房间。
They were suspected of underground activities. 他们被怀疑进行地下活动。
Moles stay underground most of the time. 钱鼠大部分时间住在地下。
He went underground to avoid capture. 他转入秘密工作以免被捕。
The cavers discovered a vast underground chamber. 探穴人发现了一个地下大洞穴。
Practice of underground ventilation by the multi-stage fan stations and its reconstruction 井下多级机站通风技术实践及改造
The quickest way to go round the city is by underground train. 在这个城市四处走动最快的办法就是乘坐地铁。
The mole bored (its way) underground. 鼹鼠在地下挖掘(路)。
The prisoner escaped by digging an underground tunnel. 囚犯挖了一条地道逃跑了。
Some miners were trapped underground after the collapse. 塌方后，有些矿工被困在地下。
There is an underground car park near the supermarket. 这个超市附近有一个地下停车场。
The revolutionist eluded capture for weeks by hiding underground. 那位革命者为避免被捕在地下躲藏了几个星期。
The ventilation is poor, the lieutenant admits. 中尉承认，通风设备很糟糕。