The present status of cement mechanicalreplacement parts used in our country has been investigated in this paper.
本文就国内水泥机械装备备件的现状进行了调研。
2
Starr convinced Edwards to narrow his focus and help develop a mechanicalreplacement for the heart's mitral valve which controls blood flow within the heart.
斯塔尔说服爱德华兹缩小他的研究范围,集中精力,研发一个代替。
3
This unit group also includes mechanical repairers who perform major repairs and replacement of mechanical units on newly assembled motor vehicles.