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- Finally the existence of key layer of overlying strata is proved with practical example. 最后,用实例证明了覆岩关键层的存在及对地表下沉的影响。
- Through the elastic thin slab theory, the load before key layer breaking and deformable coordination condition were deduced. 摘要通过弹性薄板理论，推导出关键层在破断前的载荷及其变形协调条件；
- The load when the key layer breaking instantly and strength condition were obtained by the plastic limit analysis method structure. 应用结构塑性极限分析方法，得到了关键层在破断瞬时的载荷并建立了强度条件。
- Criterion for composite key layer on overlying strata 采场覆岩复合关键层的判别条件
- You may leave your key at the reception desk. 你可以把钥匙留在服务台。
- He put the key in the lock and turned it. 他把钥匙插入锁里转动。
- I have mislaid my key to the door. 我不知道把门钥匙放到哪里了。
- He's locked in and nobody knows where the key is. 他被锁在房间里，没有人知道钥匙在什么地方。
- Reading is the key to the treasure house of ideas. 读书是打开知识宝库的钥匙。
- I looked everywhere for my lost key. 我到处寻找我丢失的钥匙。
- She inserted the key into the lock. 她把钥匙插入锁中。
- The key turned halfway and then jammed. 钥匙转了一半就卡住了。
- The key to the whole affair was his jealousy. 整个事情的症结是因为他忌妒。
- Do you know the key to the problem? 你知道这道题的答案吗？
- Your scatty son has forgotten his key again. 你那儿子丢三落四又把钥匙给忘了。
- I dropped my key somewhere about here. 我把钥匙掉在这附近某个地方了。
- I dropped the key somewhere about here. 我把钥匙掉在这儿附近了。
- He dived into his pocket for his key. 他把手伸进衣袋里找钥匙。
- He gave me a duplicate key of his house. 他给了我另配了一套他房子的钥匙。
- As he picked up the envelope, a key dropped out. 他拣起信封时，一把钥匙掉了出来。
