The printed circuit board segment also posted strong sales growth. 印刷線路板業務同樣錄得強勁的銷售增長。
The experiment of leaching gold in abandoned printed-wiring board with thiourea indicates that gold leaching with thiourea is possible and effective. 試驗研究了採用硫脲法有效地從廢棄印刷線路板中回收金。
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