Also the valve heads will be liable to be burnt by the passing hot gases, and there is the likelihood of the piston crown touching an open valve, which can seriously damage the engine.
而且气门头部容易被经过的高温气体烧蚀，活塞顶部也可能会碰到气门使发动机严重损坏。
Emergency Open valve Emergency Open valve used in water spray fire-extinguishing systems, has yet to be implemented in engineering.
紧急开启阀应用于水喷雾灭火系统，目前尚未在工程中实施。
Emergency Open valve Emergency Open valve used in water spray fire-extinguishing systems, has yet to be implemented in engineering.
紧急开启阀应用于水喷雾灭火系统，目前尚未在工程中实施。
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