-
The catheter and the tapered piston are made of rubbery material.
导管和锥形活塞均采用橡胶材料制成。
youdao
-
It has the practical usage to develop new material for piston ring.
在新材质活塞环的研制过程中具有一定的实用价值。
youdao
-
It has the practical usage to develop new material for piston ring.
在新材质活塞环的研制过程中具有一定的实用价值。
youdao