第二连接部件具有密封部件。

The second attaching member has a sealing member.

youdao

运动部件少，维修费用低廉，只需要更换密封件。

With few movement part and inexpensive maintenance cost, only needs to replace the seal.

youdao

运动部件少，维修费用低廉，只需要更换密封件。

With few movement part and inexpensive maintenance cost, only needs to replace the seal.

youdao