... spring coupling 弹性联轴器 spring coupling plate 弹簧箍圈; 弹簧连接板 sprinkler coupling 喷灌装置管接头 ...
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开发的新型管道封堵器由中心管、气囊、活塞、弹簧、夹板、护板、内接头、外接头、连接板和楔键等组成。
A newly developed pipeline plug is composed of a central pipe, balloon, piston, spring, clamp, backplate, inside and outside joints, connecting plate and a wedge key.
本实用新型为一种路面冰雪铲除装置，包括换锹、锹套、弹簧、连接板。
The utility model relates to an ice and snow shovel for road surface, comprising shovels, shovel sheaths, springs and a connecting plate.
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