1、
所述排气阀包括一排气螺钉、一弹簧、一钢球，阀球在弹簧作用力下抵靠通道上。
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2、
3、
The rear quarter vent is damaged. To renew a broken clamp screw for air port in fitter's quarter.
后三角玻璃通风窗已经损坏。更换机匠舱里损坏的舷窗及旋紧螺丝。
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4、
Equipped with professional screw and air vent design to ensure high output and economic energy cost.
配合专用的螺杆及排气设计,具备高产能,低耗能的特点.
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