茎尖

stem apex的用法和样例:

例句

  1. Calli were induced from immature leaves and stem segments of Minqin Chinese date,plant regeneration via organogenesis was obtained by rooting from shoot-tip.以民勤小枣幼茎和幼叶为外植体,诱导出愈伤组织,用茎尖诱导生根获得再生植株。

Most college students in the United States choose their major, or main field of study for their degree, before or during their first year. For Saskia Fagan, making that choice was not easy. Fagan, who is now 31 years old, grew up in Takoma Park, Mary

发表于:2018-12-12 / 阅读(111) / 评论(0) 分类 2018年VOA慢速英语(一)月

Paris Paris intrigues 1 , astonishes, provokes, overwhelms 2 ... and gets under your skin. The City of Light is the apex 3 of architectural beauty, artistic expression, and culinary 4 delight, and it

发表于:2018-12-30 / 阅读(200) / 评论(0) 分类 英语沙龙2004全年合辑下

Rwanda Invests in STEM Education for Girls Yvonne Kevia is an 18-year-old high school student in Rwanda. She wants to become a chemical engineer. She enjoys doing experiments and taking careful notes in her high school laboratory in Kigali, Rwandas c

发表于:2019-01-02 / 阅读(153) / 评论(0) 分类 2017年VOA慢速英语(十二)月

SCIENCE IN THE NEWS - Progress Made in Stem Cell Research By Caty Weaver, Jerilyn Watson, ... Broadcast: Tuesday, May 31, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I

发表于:2019-01-09 / 阅读(136) / 评论(0) 分类 科技之光

Australian researchers may have discovered a new way to treat hearing loss in infants. And the secret lies in the NOSE. Our reporter Li Dong has the details. Noses comes in all shapes and sizes, and Australian scientists are now trumpeting a new use

发表于:2019-01-19 / 阅读(159) / 评论(0) 分类 世界各地新闻集锦

面见客户时的实用英语 会话场景 接机后的次日,Brian在公司里,为Johnathan介绍自己的老板-Mr. Sun。 B: Mr. Sun, Id like you to meet Mr. Johnathan Mitchell, sales manager for Nortern Reflections of Canada. Mr. Mit

发表于:2019-01-22 / 阅读(312) / 评论(0) 分类 实用英语

By Alex Villarreal Washington 28 February 2008 Adult stem cell therapy has successfully treated leukemia and other cancers for years, in the form of bone marrow transplants. A new study in the Journal of the American Medical Association [JAMA] finds

发表于:2019-01-25 / 阅读(299) / 评论(0) 分类 VOA常速英语2008年(二月)

> 39 脂肪中的茎细胞有助于治疗糖尿病 DATE=4-26-01 TITLE=SCIENCE REPORT- Stem Cells in Fat BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-30 / 阅读(185) / 评论(0) 分类 科技之光

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(297) / 评论(0) 分类 英语新闻

It was no surprise in Hollywood last night when British actor Colin Firth and Israeli-American actress Natalie Portman took home Academy Awards(学院奖) for Best Actor and Best Actress. It was the first win for both actors. As the stammering King G

发表于:2019-02-07 / 阅读(142) / 评论(0) 分类 英语新闻

会话场景 接机后的次日,Brian在公司里,为Johnathan 介绍自己的老板-Mr. Sun。 B: Mr. Sun, Id like you to meet Mr. Johnathan Mitchell, sales manager for Nortern Reflections of Canada. (Sun extends hand first; Sun and Mitchell sha

发表于:2019-02-09 / 阅读(161) / 评论(0) 分类 实用英语

A alternate bearing 大小年结果 amendment 调理剂 ample 充足的 anatomical 解剖的 aneuploid 非整倍性(的) anion 阴离子 annual 一年生植物,一季生植物 anther 花粉囊,花药 anthocyanin [植]炭疽病 antibiotic 抗生

发表于:2019-02-09 / 阅读(238) / 评论(0) 分类 英文语法词汇

NEW DELHI, April 13 (Xinhua) -- In a landmark ruling, India's Supreme Court has rejected a plea by a death row prisoner to commute his sentence to life in jail. Devinder Pal Singh Bhullar -- on death row since 2001 for triggering a bomb blast in Sept

发表于:2019-02-09 / 阅读(127) / 评论(0) 分类 英语新闻

By Jessica Berman Washington 19 December 2007 Stem cell research was the major medical and science story this past year, topping the list of achievements that experts say might finally lead to cures for many diseases. Meanwhile, global health officia

发表于:2019-02-17 / 阅读(167) / 评论(0) 分类 VOA常速英语2007年(十二月)

It's little more than a decade since Mark Zuckerberg dropped out of Harvard at the age of 19 to launch Facebook. The social network has made him the fourth-richest man in America and a hero to any aspiring college entrepreneur. 十多年前,19岁的马

发表于:2019-02-18 / 阅读(121) / 评论(0) 分类 英语新闻

Japan's government and the country's central bank took action Thursday to dilute the yen. The Japanese currencys strong standing against the dollar is making exports more expensive, hurting efforts to revive the country's moribund economy. After many

发表于:2019-02-18 / 阅读(157) / 评论(0) 分类 英语新闻

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(215) / 评论(0) 分类 英语新闻

今天我们要学的词是stem from. Stem spelled s-t-e-m, stem; and f-r-o-m, from. Stem from是源自,来源于的意思。The UN said Syrian government forces are responsible for most of the violence stemming from the country's unrest. 联合国表

发表于:2019-02-18 / 阅读(176) / 评论(0) 分类 英语单词荟萃

Scorning a turnstile wheel at her reverend helm, she sported there a tiller; 它不屑在受人尊敬的船舵上装只旋轮,却开玩笑似地装上一只舵柄; and that tiller was in one mass, curiously carved from the long narrow lower jaw of he

发表于:2019-02-25 / 阅读(158) / 评论(0) 分类 白鲸记

接机后的次日,Brian在公司里,为Johnathan 介绍自己的老板-Mr. Sun。 B: Mr. Sun, Id like you to meet Mr. Johnathan Mitchell, sales manager for Nortern Reflections of Canada. (Sun extends hand first; Sun and Mitchell shake hands) Mr. Mit

发表于:2019-03-13 / 阅读(269) / 评论(0) 分类 实用英语
学英语单词
accreased
agglutination lysis test
Archaeofavosina
automated verificaiton system
back sweetening
balloon tamponade
beaver hair
biduplexed system
bog roll
boil-eddy
bottom swage
brake retarder
briargate
bundle isomorphism
characterizability
chemical breakdown
chickcharnee
circle reading
claudiuss
closed type bucket
compass binnacle top
compensation by the result
construction arrangement
continuous-time sequential decision process
coproscope
coun.s
criminal object
crist-
distribution manager
Effective convexity
electrodynamic timer
elements of commerce
emergency tariff act of 1921
encrusts
erythema neonatorum
extended display identification data
field curvature corrector
fixed currency symbol
forward mutation assay
french teachers
functional spasm
generalized strain
genus Ajaia
genus Lithops
gold-medalist
greasy cup
hawkgirl
Helerocolylea
hyperelastic body
ice breaker
intermediateintermediate link
just out of a bandbox
keep sharp lookout!
key personnel
Latinistic
man hour cost
manganese-steel frog
mdp
millirads
mixed pressure-turbine
nontrade foreign exchange earnings
oligurias
outproduced
over due accounts
over-assess
packing leakage
panacon
periodic account summary
phallacidin
plagusia squamosa
radio-based
ramped dump barge
Reggello
reserve for expiration of patents
rotating brushes
San Hill
save unnecessary expenses
shyti
singular forms
solu
spatial quantization
spleen controlling blood
sprocket eaves
static and dynamic equilibrium
steering gear test
Sudanyl
supercouples
synchroniaed clause
synthetic resin bearing
teleworkers
theorem of momentum
thermal transmitter
tobacco smails
toenails
tribrachius
Trusted Computing Group
unidirectional electronic valve
unskilled labor (workers)
venusquake
viewbox
Witt's color theory
WOLFSON