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

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。

youdao

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

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。

youdao

For the elliptic cylindrical surface which is the trunk of the blade, the geodesic and non-geodesic differential equations are deduced.

并针对叶片主干部分的椭圆柱面，分别推导其测地线和非测地线的微分方程序。

youdao