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关注：1
2013-05-23 12:21
求翻译：After cooling to room temperature, appropriate hydrochloric acid (37%) was added to pH = 2 and then white precipitate was generated, filtered and washed for at least three times with cold water and acetone before being dried in vacuo to T < 50 ℃ until constant weight.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
After cooling to room temperature, appropriate hydrochloric acid (37%) was added to pH = 2 and then white precipitate was generated, filtered and washed for at least three times with cold water and acetone before being dried in vacuo to T < 50 ℃ until constant weight.
问题补充： |
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2013-05-23 12:21:38
在冷却至室温后，适当的盐酸（37 ％）加入到pH = 2，然后白色沉淀生成，干燥，真空至T <50 ℃直到前过滤和洗涤至少三次，用冷水和丙酮
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2013-05-23 12:23:18
在冷却至室温后,适当盐酸(37%)已添加至PH=2,然后生成白色沉淀,过滤后再用水清洗至少三次,冷热水和丙酮在干燥之前vacuo t<50°℃固定重量之前。
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2013-05-23 12:24:58
在冷却到室温以后，适当的盐酸 (37%) 增加了对酸碱度= 2白色沉淀物引起了，然后被过滤了并且被洗涤了至少三次与冷水和丙酮在被烘干之前在真空中对T < 50 ℃直到不变权数。
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2013-05-23 12:26:38
冷却至室温后适当盐酸 （37%） 被添加到 pH = 2，然后白色沉淀是生成、 筛选和之前洗净为至少三次用冷水和丙酮在真空中至 T < 50 ℃ 烘干，直至恒重。
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2013-05-23 12:28:18
正在翻译，请等待...
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