典型辛普森式自动变速器行星齿轮变速机构将前后太阳轮连为一体,前()与后太阳轮相连,并且都与输出轴连接。
参考答案:行星架
Jumping out of ____ airplane at ten thousand feet is quite _____ exciting experience.
A./ ; the
B./ ; an
C.an; an
D.the; the
磨机直径大,钢球的平均球径也应增大。