Are solderability test samples archived for one year?

焊锡性样品是否至少保留一年？

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Is the solderability test frequency being performed at a minimum of once per lot?

焊锡性测试最小测试频率是否为每批一次？

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Is the solderability test frequency being performed at a minimum of once per lot?

焊锡性测试最小测试频率是否为每批一次？

youdao