msr 有蜻蜓可以文火，达到p家水平，缺点就是不能烧气，觉得p家炉子更胜一筹。
's chamber23may be filled with a porous material40including, but not limited to, foam. Alternatively, a pump P may be used to maintain the member20in an over inflated condition. A valve V may be used to close the conduit to the pump P to avoid fluid loss back through the pump P....