For the cold protosolar accretion disc, convective instability will gradually end from the outer region to the center and from the surface to central plane.
2
所述的制动器内盘及制动器外盘分别至少采用二片或二片以上。
Said stopper inner disc and stopper outer disc adopts at least two or two more sheets.
3
所述内法兰盘与转向节总成连接,所述外法兰盘与轮毂 连接。
The female flange is connected with the steering device; the male flange is linked to the hub.