[請益] 超音波和高週波一樣嗎?
請問我們在喝的鮮奶紙盒旋蓋處
是用超音波還是高週波加熱黏合的呢?
超音波和高週波是一樣的嗎? 加工原理也一樣囉?
google大神研究過仍不清楚
請各位大大不吝嗇分享,謝謝
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