... 聚酰胺-POLIAMMIDE-涂料 + RICOPRIRE » Polyamide coating for-POLIAMMIDE-+RICOPRIRE 牵引架 » Tractor 骑自行车游玩 » Cycling play ...
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牵引架由特制铝合金六棱管（内有加强筋）和高压锻铸铝合金扣件组合；
Traction frame from a special aluminum alloy Liuleng tube (with rebar) and high-pressure malleable aluminum fastening combination of stainless steel or aluminum rails;
目的：观察均衡牵引架牵引对腰椎间盘症突出症的影响，并进行力学分析。
Objective: To investigate the effect of balanced traction for treating Lumbar disc Herniation and discuss its mechanical principium.
她的经历让我着迷：她曾体验过牵引式飞行，由一架超轻型飞机牵引着飞行到2000英尺的高空。
She'd been flying towed tandem flights, pulled up to 2, 000 feet behind an ultralight.
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