needle measuring valve
常见例句
- Needle valve : It is an important instrument measuring piping system components, mainly cut-off valve and ball valve , its purpose is to open or cut off access by pipeline.
針型閥：是儀表測量琯路系統中重要組成部分，主要有截止閥和球閥，其功用是作開啓或切斷琯道通路用。 - 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.
推出了一種新的針閥躰座麪圓跳動誤差測量裝置，介紹了誤差的計算與評定方法。 返回 needle measuring valve