发布时间:2025-01-19 14:22:34
侧模的话,可以再保证砼棱角不被破坏的情况下拆模,正常气温一般在1天后就可以了,高温时,我曾经上午打完砼,下午就拆模了,间隔6-8小时左右吧。但不建议这样做。
变容二极管二极管相当于一个电容而电容通交流隔直流那为什么二极管可以无限通直流
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