The reference opinion for the selection principle of the proportional valve has been put forward.
对比例阀的选用原则提出了参考意见。
Finally put forward the textbook vocabulary makes selection of method and direction.
最后提出了教科书词汇选定的方法及方向。
Finally put forward the textbook vocabulary makes selection of method and direction.
最后提出了教科书词汇选定的方法及方向。
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