Fan gear mainly by the box, planetary gear speed change mechanism, and so on.
风机的变速箱主要由箱体、行星轮系和变速机构等构成。
A faucet is arranged on the upper cover above the inner liner and is matched with the output end of the speed change gear box.
在内胆的上面上盖上设置有插口，与变速齿轮箱的输出端配合。
The filter screen is arranged inside the inner liner, and the speed change gear box is arranged on the upper cover of the shell.
内胆里面设置有滤网，在外壳的上盖上，还设置有变速齿轮箱。
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