back-up valve
基本解释
- [机械工程]升压阀列车后端制动阀
英汉例句
- Furtherly, the paper also takes the back-up equipment, concept and application for the downhole-deploymemt-valve into full research.
此外,本文还对套管阀的设备配套、理论和应用进行了较全面的分析研究。
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.
用植绒PVC料经高频热压成型,倒阀门气嘴,具有双层防漏气渗气功能。
3g.sina.com.cn
双语例句
专业释义
- 升压阀
- 列车后端制动阀