It has long been known that liquids such as water and oil obey Newtons law of viscosity, which states that shear stress is proportional to sliding speed. In the past, oil pumps were used to transport these fluids, but with the rapid develo
日期:2022-04-11 20:28:19 点击:183
(1) sealing fluid system of packing seal (2) when the pump conveys clean liquid, the sealing liquid is led out from the pump outlet, and the pump can be led out from the middle stage, and connected with the sealing liquid inlet at the seal
日期:2022-04-11 20:32:57 点击:108