The end of the upper cover is connected with the U-shaped bracket by a shaft, which is used for applying the force on the upper cover by users and then transferring the force to the punch.
上盖，其末端与此U型支架相轴接， 用来让使用者施力于此上盖上再将力传递至此冲子；
The upper nest is connected to the upper end of umbrella column; the middle and lower nests cover umbrella column.
上巢固定连接在伞柱的上端、中巢和下巢空套在伞柱上。
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。
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