可伸缩套管的英文

• telescopic tube

• 可:    approve
• 伸缩:    stretch out and draw back; e ...
• 套管:    drivepipe; annular tubes; br ...
• 伸缩套管:    boom receptacle; expansion sleeve; reciprocating tube; reciprocation tube; telescope tube; telescopic boom; telescopic duct; telescopic line; telescopic shaft; telescopic tube
• 活塞冷却伸缩套管:    reciprocating piston cooling pipe; reciprocation piston cooling pipe