• A new device for measuring run out error of needle valve seat′s cone surface is proposed. The calculating and estimating methods of the error are also described in the paper.

    推出了一种新的阀体圆跳动误差测量装置介绍了误差计算评定方法

    youdao

  • A manual or automatic, conical needle in a seat valve that can be changed to alter the amount of fluid flow through it.

    在座中的一个手动自动锥形针状体。对它进行调节就改变流过流体流量

    youdao

  • A manual or automatic, conical needle in a seat valve that can be changed to alter the amount of fluid flow through it.

    在座中的一个手动自动锥形针状体。对它进行调节就改变流过流体流量

    youdao

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