钢制动轮外圆表面经淬火处理。

Circle surface of metal brake ring operated by quenching.

youdao

因此，泵体与螺杆外圆表面及螺杆与螺杆间隙应尽可能小些。

Therefore, the pump body and screw cylindrical surface and screw and screw clearance should be as small as possible.

youdao

因此，泵体与螺杆外圆表面及螺杆与螺杆间隙应尽可能小些。

Therefore, the pump with the screw and screw and screw cylindrical surface gap should be as small as possible more.

youdao