weak-weathered rock
... weak solution 稀溶液 weak-weathered rock 弱风化岩 weapon accessibility 核武器适用性，核武器[使用前]检查方法 ...
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弱风化岩体 slightly weathered rock mass
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工程实践证明，这些方法成功地解决了上述条件下弱风化硬岩中大口径钻进的难题。
The engineering practice has proved that these methods solved successfully the problem of great caliber drilling in weakly weathered rigid rock by hydraulic piling rig.
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