One effective way is preferred pump barrel and plunger of materials and surface treatment processes.
其中一个有效的方法就是优选泵筒和柱塞的材料和表面处理工艺。
They must be made only with natural processes and materials.
他们只能被正常的方法和材料制造。
These processes can also be applied to the oxide materials you had in mind.
这些处理气体同样能用于氧化物材料。
These processes can also be applied to the oxide materials you had in mind.
这些处理气体同样能用于氧化物材料。
应用推荐