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контрольная скважинаstresses
el. 检查钻孔
oil 观察井; 控制井; 监测孔; 井筒检查孔; 检验井; 验证孔; 检验钻孔验证孔
tech. 检验孑
контрольная скважина
: 1 phrase in 1 subject
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