24小时热门版块排行榜    

查看: 1053  |  回复: 5
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

musashino

铜虫 (正式写手)

[求助] 翻译 ,谢谢

This is the most ancient method of distillation and the most
versatile. This method requires the simplest setup and it is used extensively by
smallholder producers of essential oils (Figure 2.4). The herb is loaded into a tub and
covered with enough water to ensure the plant material is suspended. This mixture is
heated until it boils and the vapors rise from the tub and then condensed. Once the
vapors are condensed the liquid mixture is poured in a separator where the oil and
water separate by density difference (Denny 1991). The water sometimes is also used
and is marketed as "floral waters" (also called hydrosol or sweet water) - such as
rosewater, lavender water and orange water.
Some disadvantages are the variability on the distillation rate due to the uncontrolled
heat rate input; possible overheated and eventually the aromatic materials can get
burned. Improved distillation control can be obtained by using steam from a separate
boiler. A further disadvantage of this system is that it requires the heating of a large
quantity of water and the associated energy demand adds to the costs and time needed
for each distillation.
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

yaoshixs

金虫 (小有名气)

【答案】应助回帖

★ ★ ★
sltmac(金币+3): 2011-04-28 18:15:10
这是一种最古老和最通用的蒸馏方法,这种方法需要最简单的设备并被小型生产商广泛应用于精油(图片2.4)的生产。使用这种方法时,首先将药草放入一个罐中,用足够量的水覆盖住药草保证植物组织处于悬浮状态;然后将混合物加热到沸腾使蒸汽从罐中出来,然后进行浓缩。当蒸汽浓缩成液体之后,将液体混合物转移至分离器中,油和水在分离器中由于密度的差异而得到分离(Denny在1991年发明的方法)。人们有时把这种水当做“天然花卉水”(也可以叫做水溶胶或者甜水),它可以像玫瑰水、熏衣水和橘子水一样使用或者出售。

这种方法的缺点有,由于不可控制的传热率导致的变化的蒸馏速率,以及可能的过热会导致的芳香性物质的破坏。为了获得可以控制的蒸馏装置,我们可以使用一个蒸汽发生器,但是这种方法的缺点是需要加热大量的水,这样的话,每次蒸馏加热水需要的能量会提高成本并耗费大量时间。



纯手工翻译。
什么都不懂!
3楼2011-04-24 16:41:20
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 6 个回答

zerohead

禁虫 (职业作家)

【答案】应助回帖

★
sltmac(金币+1): 2011-04-28 18:14:45
This is the most ancient method of distillation and the most versatile. This method requires the simplest setup and it is used extensively by smallholder producers of essential oils.

这是一种最古老的和用途最广的蒸馏法,它所需的设备极其简单。这种蒸馏法被精油小型生产商广泛利用。
2楼2011-04-21 02:48:09
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

mengxs

木虫 (正式写手)

基本还是翻译器
一个人,静静的,惬意地忙碌着
4楼2011-04-25 19:57:15
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

yinjuanchen

铁杆木虫 (著名写手)

留下脚印,回头再来翻,
闭关,写写写
5楼2011-04-26 09:56:01
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[公派出国] 售SCI一区文章,我:8O5.5.1.O5.4,科目全,可伽急 +3 TZqyNTBa07NP 2026-11-13 3/150 2026-11-14 16:09 by KXypaGgBBlw7
[基金申请] 售SCI-T0P文章,我:8O.5.5.1.O.54,科目齐全,可+急 +3 XJXMuRjD7cK7 2026-11-13 3/150 2026-11-13 23:37 by 6PrO1XyZ5URF
[硕博家园] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +6 FChKX8meu1ds 2026-11-09 10/500 2026-11-13 11:08 by Equinoxhua
[考博] 27博士 +5 锦鲤送福至 2026-11-10 5/250 2026-11-13 06:22 by wlf1982
[考博] 27博士申请 +5 白白白ly 2026-11-09 5/250 2026-11-13 05:01 by wlf1982
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +4 Z7qfCsdIiD1T 2026-11-11 5/250 2026-11-12 11:44 by HajghKOMynmz
[硕博家园] 售SCI文章,我:8O.5.5.1O.54,科目全,可十急 +4 czAiolzR0IJC 2026-11-10 8/400 2026-11-12 10:49 by HajghKOMynmz
[考博] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +6 YHiw1gou1Eda 2026-11-10 6/300 2026-11-12 10:08 by HajghKOMynmz
[公派出国] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +7 FChKX8meu1ds 2026-11-09 9/450 2026-11-12 10:03 by HajghKOMynmz
[教师之家] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +7 FChKX8meu1ds 2026-11-09 12/600 2026-11-12 09:43 by HajghKOMynmz
[基金申请] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +6 zSbvVX9JFl9J 2026-11-09 9/450 2026-11-12 09:21 by HajghKOMynmz
[硕博家园] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +3 C6CRn66RYYXS 2026-11-10 5/250 2026-11-12 06:03 by 9fOTqj074tIg
[考研] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 YHiw1gou1Eda 2026-11-10 6/300 2026-11-12 05:41 by 9fOTqj074tIg
[考博] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +3 FChKX8meu1ds 2026-11-09 8/400 2026-11-12 05:30 by 9fOTqj074tIg
[考研] 售SCI一区T0P文章,我:8.O.55.1.O54,科目全,可伽急 +5 FChKX8meu1ds 2026-11-09 8/400 2026-11-12 05:30 by 9fOTqj074tIg
[基金申请] 售SCI一区T0P文章,我:8.O.55.1.O.54,科目齐全,可+急 +5 FChKX8meu1ds 2026-11-09 7/350 2026-11-12 05:30 by 9fOTqj074tIg
[教师之家] 售SCI一区T0P文章,我:8O.55.1.O.5.4,科目齐全,可+急 +5 FChKX8meu1ds 2026-11-09 10/500 2026-11-12 05:19 by 9fOTqj074tIg
[基金申请] 售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急 +3 FChKX8meu1ds 2026-11-09 7/350 2026-11-12 05:19 by 9fOTqj074tIg
[硕博家园] 售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急 +4 cqv1zKnzd7hr 2026-11-09 8/400 2026-11-12 05:08 by 9fOTqj074tIg
[教师之家] 售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急 +6 0TEMgxdT1eIw 2026-11-09 8/400 2026-11-12 05:00 by 9fOTqj074tIg
信息提示
请填处理意见