内罩为不锈钢板卷制密焊成型，罩底法兰和真空密封槽由大型立车精车加工成型。
For the cover of rolled stainless steel plate welded shape, cover and vacuum sealing flange at the end of the trough of large vertical lathe machining fine car molding.
移开密闭罩，将其放入袋内并密封。
所述罩 （2）具有可密封的给水口（4），使得水可被倒入所述腔（15）内。
The cover (2) has a sealable feeding mouth (4) so that water may be poured into the chamber (15).
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