1)seal mechanism,封口机2)seaming machine of modle GT4B2,GT4B2封口机3)sealing mechanism,封口机构4)heat-sealing machine,热封口机5)capper for envelop,信封封口机6)seaming machine of rectangular cans,方听封口机
用法例句
The seal procedure is achieved usually by a twisting breakable covers rolling seal mechanism, in which the key part is a rolling seal unit which rolls the screw on the aluminum bottle cover.
