The two contact surfaces are made out of anti-wear-out and Tungsten Carbide for suppression of mechanical jolt.
The two contact surfaces are made out of anti-wear-out and Tungsten Carbide for suppression of mechanical jolt.
两个接触面是由抗磨损和机械突震之碳化钨所制成的。
The two contact surfaces are made out of anti-wear-out and Tungsten Carbide for suppression of mechanical jolt.
两个接触面是由抗磨损和机械突震之碳化钨所制成的。