back-up valve

基本解釋

• [機械工程]升壓閥列車后端制動閥

英漢例句

雙語例句

• Furtherly, the paper also takes the back-up equipment, concept and application for the downhole-deploymemt-valve into full research.
  此外，本文還對套管閥的設(shè)備配套、理論和應(yīng)用進行了較全面的分析研究。
  lib.swpu.edu.cn
• PVC flocking materials used by high-frequency hot press molding, gas valve back up, with both gas permeability and gas leak-proof function.
  用植絨PVC料經(jīng)高頻熱壓成型，倒閥門氣嘴，具有雙層防漏氣滲氣功能。
  3g.sina.com.cn

• back-up valve更多例句

專業(yè)釋義

機械工程

• 升壓閥
• 列車后端制動閥