Some sealing methods after thin nickel .
介绍了一些镀薄镍后封闭的方法。
This article introduced that lens is produced by heat sealing and high frequency sealing methods.
介绍了用烧结法或高频熔封法制作光窗（透镜）。
A new filling machine suitable for silvering vaccum flacks made by bottom sealing and mouth sealing methods was described.
本文介绍了适合于我国用拉底、封口方法生产保温瓶镀银工序用的新型灌液机。
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