I'm just going to see that the bricklayers do the right thing.我只不过是让砌砖工正确地干活.I will handle the bricklayers myself.我将亲自来安排砌砖工人.Bricklayers and carpenters often use plumb lines.瓦工和木工经常使用铅垂线....
针对常规抽油泵使用中易发生磨损、砂卡和脱扣的弊端,研制了高效 防 砂抽油泵.A high - efficiency anti - sand pump is developed for oil recovery in sandy wells.半导体脱扣器电路与智能脱扣器电路有明显的差异性,有各自的优点.There is a difference between semiconductor release circuit and intel...