基本解釋[機(jī)械工程]升壓閥列車后端制動(dòng)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(duì)套管閥的設(shè)備配套、理論和應(yīng)用進(jìn)行了較全面的分析研究。lib.swpu.edu.cnPVC 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.cnback-up valve更多例句專業(yè)釋義機(jī)械工程升壓閥列車后端制動(dòng)閥