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Terms for subject Oil / petroleum containing 元组 | all forms | in specified order only
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井组单元symmetry element
元组unit assembly
单元机组monobloc
双组元推进剂dipropellant
同组元素group element
底部钻具组合有限元模式BHA finite element model
气动单元组合仪表pneumatic unit assembly instrument
电动单元组合仪表electro-unit assembly instrument
组元constituent element
组构元素structural element