紧固套连接套
Tighten the sleeve connecting sleeve
以上为机器翻译结果，长、整句建议使用 人工翻译 。
紧固套由弹性材料做成，支撑杆与紧固套两端与支承它们的横杆滑动连接。
The fixing sleeve is made of an elastic material, and the two ends of the support bar and the fixing sleeve are in slip connection with the supporting transverse rods.
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