The barrel, plunger and standing valve of the pump were designed, improving the barrel's force conditions and reinforcing the screw thread's sealing performance and tensile strength.
该泵对泵筒、柱塞、固定阀做了设计，改善了泵筒受力状况，提高了螺纹的密封性能和抗拉强度。
2
The relatively smaller cross section of the plunger as compared to the barrel produces a corresponding greater vacuum force.
柱塞与针筒相比相对较小的横截面产生了相应的较大的真空力。
3
R1 is influenced by several factors, including the material and condition of the target and plunger, the surface area and shape of the plunger tip, and the amount of force applied.