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- It is difficult to analyze combined work of underground penstock due to the gap among steel lining, concrete lining and rock. 摘要埋藏式压力钢管设计中，钢衬、混凝土衬圈和围岩之间普遍存在着不连续的缝隙，致使设计计算时难以进行联合受力分析。
- Design of Drainage System for Pressure Tunnel and Underground Penstock of Hydropower Station 水电站压力隧洞及地下压力钢管排水系统设计
- Design of resistance to external pressure for underground penstock of hydroelectric stations 水电站地下压力埋钢管抗外压设计探讨
- Combined work analysis of underground penstock based on imperfect contact consideration 考虑不密实接触地下埋管联合受力分析
- 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。
- 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。
- 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。
- underground penstock 地下埋管
- 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。
- He joined the underground to fight against the fascists. 他参加了地下组织与法西斯作战。
- I used to go to work by underground when I was in London. 我在伦敦时，通常乘地铁上班。
- An underground passage leads to the building across the street. 一条地下通道通到街对面的大楼。
