“special shaft-sinking method”的概念、定义、翻译、参考文献-科学参考

单词	special shaft-sinking method
释义	special shaft-sinking method Encyclopedia 工学特殊凿井法释 special shaft-sinking method特殊凿井法在不稳定的含水地层或在含水量大的稳定地层中，为加固井筒围岩或隔绝水流等而采用的凿井方法。
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