sealed-for-life 中文意思是什麼
sealed-for-life
解釋
永久性密封-
Contact reed sealed the premises for more dust long life, high reliability
密封的簧片觸點可用於多塵場所壽命長,可靠性高 -
Szkx series has self - cooling sealed structure and in use for b - class insulation material, so possesses features of less maintenance, reliable operation and long life
本電動機採用封閉型自冷結構和b極構緣材料,維護少、運行可靠、壽命長。
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