发布时间:2025-01-21 12:17:08
可以有几种方法,最简单和最方便的方法就是用浓茶泡了纸张后暴晒。但这样有可能会黄的不均匀。还有一种就是烟熏法了,顾名思义就是用烟将纸张熏黄,但要慢慢烘才可以。
有人说防雷器接地反而无法防雷原因是接地线上也有感应电动势同时无法形成放电回路
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