有内胎式轮胎气门是直接做在内胎上的，无内胎式轮胎的气门安装在轮毂上。
On the tire with an inner tube, the valve is mounted on the tube. On the tubeless tire, the valve is mounted on the wheel rim.
有内胎式轮胎气门是直接做在内胎上的，无内胎式轮胎的气门安装在轮毂上。
On the tire with an inner tube, the valve is mounted on the tube. On the tubeless tire, the valve is mounted on the wheel rim.
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