The pure gum rubber sleeve of the Type A Valve offers excellent abrasion resistance, and since the Type A uses only air pressure to operate, there are no moving parts to break or wear out.
型夹管阀采用的纯树脂橡胶具有优异的抗磨损能力，因为A型夹管阀只是采用气压进行操作，因此没有活动部件会断裂或磨损。
It is put out that the injector and extruder are strengthened on the surface by laser surface alloy to improve its high temperature abrasion and lengthen life of the injector.
提出了采用激光表面合金化的方法对注塑机和挤出机螺杆表面进行强化，以提高其抗高温粘着磨损性能，延长注塑机使用寿命。
Based on the calculated liquid and solid phase velocity fields, the numerical simulation of silt abrasion on runner blade surfaces has been carried out.
根据液相和固相三维流速场的计算结果数值模拟了转轮叶片面的泥沙磨损。
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