porcelain filling
... 瓷衬球磨机 porcelain mill 瓷充填 porcelain filling 瓷灯头 porcelain lamp holder ...
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瓷粉充填器 porcelain plugger
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熔断管是熔断器的主要部件，它是由熔丝装在瓷管中，并在瓷管中充填石英砂，两端密封而成。
The fuse pipe is the main part of fuse, it is made by installing the fuse wire in the porcelain pipe, filling the quartz sand in the porcelain pipe and sealing to-ends of pipe.
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