... incompatible element 不相容元素 incompetent bed 弱岩层 incompressibility 不成压缩性 ...
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短语
软弱岩层
soft stratum
;
Weak strata
弱胶结砂岩地层
weakly consolidated sand formation
软弱层状围岩
Soft Layered Surrounding Rock
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incompetent beds
incompetent bed
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