[医] 有旋光力的

optically active的用法和样例:

例句

  1. Slow crystal formation gives quite pure crystals that probably need not be recrystallized for the optical activity studies.缓慢的结晶过程会给出十分纯的晶体,在光学活性的研究中,这些晶体很可能不需要进行再结晶了。
  2. The racemate is optically inactive.外消旋体是不旋光的。

[00:35.00]a/an [00:37.07]art.1.一(个) 2.任何一个 3.每,每一 [00:39.13]abandon [00:40.59]vt.1.抛弃 [00:42.06]abide [00:43.49]2.放弃. [00:44.93]ability [00:46.37]v.(by)坚持,遵守 [00:47.80]able [00:49.18]n.1.能力,智能 2.才能,才干

发表于:2018-11-30 / 阅读(314) / 评论(0) 分类 考研英语词汇2005

actually 实际上 accident 意外 act 行动 active 积极 activity 活动

发表于:2018-12-01 / 阅读(342) / 评论(0) 分类 用听的背单词-基础2000MP3(a-g)

Today's topic is active voice versus passive voice. Here's Brian from Iowa: It drives me crazy when people write in passive voice. How can I teach people how to tell the difference between passive and active voice and stay away from passive voice? Th

发表于:2018-12-07 / 阅读(326) / 评论(0) 分类 英语语法 Grammar Girl

Unit 2 She looks active. [00:02.39]第二单元 她看起来活跃。 [00:04.78]Lesson 7 Just speak [00:07.01]第七课 刚才的谈话 [00:09.25]Who's this? [00:10.83]这个是谁? [00:12.41]My new friend in the art club. [00:14.29]我在艺术俱乐

发表于:2018-12-12 / 阅读(298) / 评论(0) 分类 人教版小学英语五年级

by Mignon Fogarty Today's topic is active voice versus passive voice. The podcast edition of this article was sponsored by GoToMeeting. With this meeting service, you can hold your meetings over the Internet and give presentations, product demos and

发表于:2018-12-15 / 阅读(288) / 评论(0) 分类 英语语法 Grammar Girl

Muslim Brotherhood Ready for More Active Role in Jordan From VOA Learning English, this is IN THE NEWS in Special English. The Muslim Brotherhood is one of the largest Islamic groups in the Arab world. For years, the Brotherhood has been banned in a

发表于:2018-12-16 / 阅读(298) / 评论(0) 分类 2013年VOA慢速英语(六)月

The top American military officer, Admiral Mike Mullen, has taken a particularly active role in changing the U.S. approach to Afghanistan, contributing to the new strategy, choosing the new commander for U.S. and NATO forces, and deciding to replace

发表于:2018-12-16 / 阅读(263) / 评论(0) 分类 VOA标准英语2009年(六月)

A story: Paul's pet parrot

发表于:2018-12-17 / 阅读(394) / 评论(0) 分类 小学六年级英语

LESSON EIGHT [00:14.89]Listen and repeat these groups of words. [00:20.45]tall as tall as not as tall as [00:28.92]active as active as not as active as [00:37.59]healthy as healthy as not as healthy as [00:45.32]quiet as quiet as not as quiet as [00:

发表于:2018-12-25 / 阅读(293) / 评论(0) 分类 洪恩环境英语

Iranian President Mahmoud Ahmadinejad's visit to Istanbul last week is seen as part of Ankara's increasingly active role in the Middle East, after decades of passivity in the region. At the same time, some analysts say, Turkey's ties to the West are

发表于:2019-01-13 / 阅读(358) / 评论(0) 分类 VOA标准英语2008年(八月)

World Health Day Focuses On 'Active Aging' Shelby Harris just celebrated his 111th birthday. His secret? I try to live the right kind of life, he said. I try to live the truth, I love everybody and I want everybody to love me. Some experts say a posi

发表于:2019-01-13 / 阅读(288) / 评论(0) 分类 VOA标准英语2012年(四月)

Active MRI Shows How Joints Work 活动核磁共振成像显示身体关节如何运作 Since its introduction in the 1980s, magnetic resonance imaging machines, commonly known as MRI scanners, have become a highly valuable tool in diagnostic medicin

发表于:2019-01-14 / 阅读(274) / 评论(0) 分类 VOA标准英语2014年(三月)

自我介绍的英语作文

发表于:2019-01-17 / 阅读(317) / 评论(0) 分类 英语作文

LONDON, July 4 (Xinhua) -- Anders Fogh Rasmussen, Secretary General of the North Atlantic Treaty Organization (NATO) expressed his hope on Wednesday that NATO would seek a more active dialogue with China. We must expand the range of nations with whom

发表于:2019-01-30 / 阅读(339) / 评论(0) 分类 英语新闻

SEOUL, Nov. 8 (Xinhua) -- Samsung Electronics, the world's largest flat screen TV vendor, said Tuesday that it has suspended its plan to develop active shutter three-dimensional (3D) TVs with RealD, the U.S.-based 3D technology supplier. Samsung has

发表于:2019-01-30 / 阅读(333) / 评论(0) 分类 英语新闻

今天我们要学的词是active duty。 Active duty, 现役的。星期一是美国阵亡将士纪念日。 My friend Jack is an active duty Army Captain who has deployed overseas three times, 我朋友杰克是现役陆军上尉,先后三次被派

发表于:2019-02-05 / 阅读(346) / 评论(0) 分类 英语每日一词

今天我们要学的词是active duty。 Active duty, 现役的。星期一是美国阵亡将士纪念日。 My friend Jack is an active duty Army Captain who has deployed overseas three times, 我朋友杰克是现役陆军上尉,先后三次被派

发表于:2019-02-16 / 阅读(238) / 评论(0) 分类 英语单词荟萃
学英语单词
'scused
a quickie
Anhungai
Arnaudon's green
ascertains
berake
blue-south
bricking-up
c.t.c
caked mass
candyasses
carbanucleosides
Cd7-MT
clamors
concurrent with
conditories
Cornell's sign
culex (eumelanomyia) malayi
deductive reasoning
disenthrall
division cycle
doob grass
DTZO
dukeout
end-to-end test
feed lot,feedlot
fell overboard
firing base
fish ponds
floating deposit
formaldehyde water pollution
Fournier
germ track
gothic romances
granomerite
heavy laundering
hexanchid
high capacity
hot-poo
inside coil
institutional investors
intensity of photosynthesis
internal incentive mechanism
internal modem
Itaka
Khvosh Maqām
knock someone sideways
Krasnovodskiy Zapovednik
kwn
leaf blotch of wheat
linsey-wolsey
little leaf
lobcocks
marriage offers
misinformative
mold setting and stripping bay
monocled
Mpouya
needle type injector
neighbo(u)rhood region
net ton kilometers per loaded car kilometers
nonrationalistic
olefinic alcohol
outdriven
parathyropathy
passive glacier
Pelean
Permskaya Oblast'
Pinus wangii
precursor cells
procuring agency
ramus colli
real estate deal
reintubations
repairdeficiency
second division
separable game
separation identification system
shadow matter
short circuit input capacitance
short-term investment
socialismo
sodium aminoarsenate
specified costs
spray drawing
statement of purpose
switching rise time
tiller disk
Todd,Mike
trace test of cointegration test
transfer on no overflow
tungsten-carbide tipped cutting teeth
Umbria, Pta.
veltameremeter
venae adumbilicales
venereal lymphogranuloma
visual projection
wave protection works
Wei-jing
wilcat
wire spoke wheel
wrap reel