18.4.2 Screw-Type Positive Displacement Rotary Pump
工程科技

18.4.2 Screw-Type Positive Displacement Rotary Pump图片（共2张） :

        There are many variations in the design of the screw type positive displacement, rotarypump. The primary differences consist of the number of intermeshing screws involved, thepitch of the screws, and the general direction of fluid flow. Two common designs......（本文共 2849 字, 2 张图）     [阅读本文] >>