The set takesRoots pump as its main pump and spinning vacuum pump as pre-stage pump.
本机组采用罗茨泵作为主泵,以旋片式真空泵作为前级泵。
2
Being the nation's number one Latin program in terms of student interest takes the campus back to its roots.
从学生兴趣方面来说,成为全国最大的拉丁语项目,将大学校园带回了其根本。
3
The roots of both please and placebo are the same and the American Heritage Dictionary takes them back to an Indo-European root plak that meant "to be flat."