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三位换向阀的常态为是 _____，按其各油口连通方式不同常用的有 _____、_____、_____、_____、 _____五种机能。
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三位换向阀的常态为是 _____，按其各油口连通方式不同常用的有 _____、_____、_____、_____、 _____五种机能。
时间：2021-09-02 15:22
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联大
河南理工大学液压传动技术
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中位、 O、 P、 M 、 H 、 Y
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三位换向阀的阀芯未受操纵时,其所处位置上各油口的连通方式就是它的滑阀机能。( )
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