He became head of Motown's qualitycontroldivision.
他成为了汽车城质量控制公司的领导人。
2
He became head of Motown 's qualitycontroldivision.
他成为了汽车城质量控制公司的领导人。
3
Considering the present situation of shield tunneling on Beijing metro, the paper describes the construction stage division and the main points of engineering qualitycontrol for shield tunneling.