风扇和空气过滤器是另一个干扰源，因此有的宇航员会戴耳塞，挡住这些持续不断的嗡嗡声。
Fans and air filters add to the distractions, so some astronauts wear ear plugs to block out the constant hum.
罐中的风扇使空气流过过滤器，这样净化的空气通过软管达到面具。
The canister USES a fan to force air through the filter, and then the purified air runs through a hose to the mask.
如果您的车辆使用条件极为尘土飞扬，你可以选择装备绞盘冷却风扇的高性能过滤器。
If your vehicle is used in extremely dusty conditions you can choose to equip the winch cooling fan with a high performance filter.
应用推荐