上QQ阅读APP看本书，新人免费读10天
设备和账号都新为新人
8.3 Bellows
8.3.1 After the bellows are installed in place，the pre-stretching length shall be adjusted and checked and the requirements of the design document shall be met.
8.3.2 The bellows should be assembled with the transmission gear box with the distributor chute on the ground and then lifted with it in place.