常見例句雙語例句The method of design and calculation on in-line welding branch pipeline for gas transmission trunk line is introduced.介紹了干線輸氣管道熱連接分支管道的設(shè)計(jì)計(jì)算方法。It is very important to describe the performance curves of centrifugal compressor by mathematical model accurately for the automatization design and management of gas transmission trunk line.對于輸氣干線的自動化設(shè)計(jì)和管理來說，用準(zhǔn)確的數(shù)學(xué)模型描述離心壓縮機(jī)的特性曲線至關(guān)重要。 返回 gas transmission trunk line