A new metalization process of electricity insulating procelain sleeve was developed to substitute traditional silver baking process.

 
  • 為取代傳統的烘銀工藝,開(kāi)發(fā)了一種新的電氣絕緣瓷套的表面金屬化工藝。
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国内精品美女A∨在线播放xuan