24小时热门版块排行榜

返回列表

本帖产生 1 个翻译EPI ，点击这里进行查看

当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖

Rio2016

木虫 (小有名气)

翻译EPI: 72
应助: 28 (小学生)
贵宾: 0.013
金币: 3301.7
散金: 25
红花: 6
帖子: 300
在线: 243.3小时
虫号: 1910117
注册: 2012-07-25
专业: 抗肿瘤药物药理

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
phu_grassman: 金币+5, thanks 2013-04-12 08:53:47
飘落江南: 金币+25, 翻译EPI+1, ★★★★★最佳答案 2013-04-15 19:43:25

When it reaches -10° C, he
keeps it at this temperature for a couple of hours,
then filters out the crystals.
当它达到-10° C，在这个温度保持两小时，然后滤掉结晶物。
They are rinsed a couple of times with ether or another solvent such
as hexane, then, while still wet with ether, added
to a large flask or beaker containing 2000 ml of
water.
用乙醚或其他溶剂例如正己烷冲洗两次，然后，保持带有乙醚的湿的状态，并转移到一个带有2000ml水的大瓶或烧杯中。
They are dissolved by stirring, then the
flask or beaker is cooled down to 0° C by packing
it in ice mixed with salt. When it reaches this
temperature, 200 ml of glacial acetic acid is
added to it with vigorous stirring.
搅拌使其溶解，然后把瓶子或烧杯埋到冰盐混合物中使其降到 0° C 。当它降到这个温度，向里面加200 ml 冰醋酸，边加边搅拌。
The chemist must make sure that the temperature does not go
up more than a few degrees while he is adding it.
filters the crystals off it and rinses them a few
times with water.
操作者必须保证，在添加的过程中不能使温度升高几度，滤去结晶物，用水冲洗几次。

文章不难、、自己试译下吧

赞一下

回复此楼

寥寥数年、将就过活

2楼2013-04-11 21:25:01

已阅回复此楼关注TA 给TA发消息送TA红花 TA的回帖

相关版块跳转我要订阅楼主飘落江南的主题更新

返回列表