unidirectional pressure temporary plugging additive的意思|示意
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单向压力暂堵剂
unidirectional pressure temporary plugging additive的网络常见释义
单向压力暂堵剂 ... 淡水fresh water 单向压力暂堵剂unidirectional pressure temporary plugging additive 导向螺杆钻具stearable assemly ...