While the rear bus end works as a rigid shear wall, the front cap part is weakly supported and it exhibit significantly smaller strength.
这是因为虽然巴士的尾部就像一面刚性墙一样坚固，但是前盖却没有强有力的支撑，因此能承受的力量明显减小。
One of the advanced features of the Common DC bus components is the Vacon-patented methodology of using parallel Active Front-End (AFE) units.
普通DC总线产品零件的其中一个优势是伟肯专利的使用平行的(afe)主动前端理论。
应用推荐