作业帮英语翻译1.将样品按1：5的比例溶于纯水中.2.加热溶解,溶解温度控制小于80度.3.待完全溶解后,加入溶液总量0.2-0.4％的活性炭,搅拌30分钟,过滤,虑液无色透明.4.将滤液于60-70度条件下减压浓缩,
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英语翻译1.将样品按1：5的比例溶于纯水中.2.加热溶解,溶解温度控制小于80度.3.待完全溶解后,加入溶液总量0.2-0.4％的活性炭,搅拌30分钟,过滤,虑液无色透明.4.将滤液于60-70度条件下减压浓缩,
英语翻译
1.将样品按1：5的比例溶于纯水中.
2.加热溶解,溶解温度控制小于80度.
3.待完全溶解后,加入溶液总量0.2-0.4％的活性炭,搅拌30分钟,过滤,虑液无色透明.
4.将滤液于60-70度条件下减压浓缩,浓缩至总体积减少至三分之一；
5.冷却至常温结晶.
6.离心脱母液,至离心机排水口无出水,加入酒精洗2次.
7.清洗后的晶体送至干燥机于65度条件下真空干燥2小时,得成品.
8.母液回收浓缩后再重新结晶.
英语翻译1.将样品按1：5的比例溶于纯水中.2.加热溶解,溶解温度控制小于80度.3.待完全溶解后,加入溶液总量0.2-0.4％的活性炭,搅拌30分钟,过滤,虑液无色透明.4.将滤液于60-70度条件下减压浓缩,
1.The samples were dissolved in water according to the ratio of 1:5.2.Heating dissolution and the dissolution temperature less than 80 degrees.3.When completely dissolved ,adding activated carbon 0.2-0.4% of the total solution,stirring for 30 minutes,filtered,The transparent colorless liquid consideration.4.Filtrate under vacuum conditions will be concentrated in the 60-70 degrees,to reduce the total volume of concentrate to third; 5.Cooling under nature temperature till crystallized .6.Centrifugal from mother liquor,no water outfall to centrifuges,adding alcohol washed 2 times.7.Washed crystal sent to the dry cleaning machine at 65 degrees for 2 hours under vacuum drying,products finished.8.Then re-concentrated waste liquid crystal.