The preservation effect of fresh apple packed with AF type atmosphere wrapping paper at room temperature were studied.
采用AF型气氛保鲜纸对苹果进行了常温保鲜的效果试验，并与其他方法进行了对比试验。
It was found that 78% zinc extraction was obtained at room temperature and atmosphere pressure.
试验结果表明：在常温常压下，用硫酸浸出该氧化锌矿石锌的浸出率可达到78%。
It was found that 78% zinc extraction was obtained at room temperature and atmosphere pressure.
试验结果表明：在常温常压下，用硫酸浸出该氧化锌矿石锌的浸出率可达到78%。
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