[化] 标准物; 基准物
[医] 标准物质

standard substance的用法和样例:

例句

  1. The two gaseous Reference Materials, Carbon dioxide in nitrogen and methane in air, belong to standard mixed gases.氮中二氧化碳和空气中甲烷气体标准物质属于标准混合气。
  2. Their pureness deterimined in methods of two different priciples and conformed to the technical norm of first grade military standard substance.四种标准物质采用两种不同方法定值,结果均达到一级军用标准物质要求。

今天我们要学的词是double standard。Double standard, 双重标准。美国国会众议院议长佩洛西指责共和党人在医疗保健改革的辩论中使用双重标准, House Speaker Nancy Pelosi accused Republicans of having a double

发表于:2019-01-07 / 阅读(82) / 评论(0) 分类 英语单词荟萃

今天要学的一个词组是:double standard。 Double standard是指双重标准。美国连锁商店沃尔马允许在中国的分店组织工会,却不允许在美国的商店组织工会。媒体报导的标题说:Critics claim double sta

发表于:2019-01-11 / 阅读(125) / 评论(0) 分类 英语单词荟萃

BEIJING, March 3 (Xinhua) -- China has released standard names and descriptions of the Diaoyu Island and its affiliated isles, according to sources with the State Oceanic Administration. The Diaoyu Island is named as Diaoyu Island, with its Chinese p

发表于:2019-02-18 / 阅读(70) / 评论(0) 分类 英语新闻

4 Ways to Measure Your Standard of Living Standard of living should not equate to amount of spending. When I sat down to write an article on the countries with the highest standard of living, I thought it would be easy. But, how do you define standar

发表于:2019-02-18 / 阅读(78) / 评论(0) 分类 阅读空间

今天我们要学的词是gold standard。 Gold standard, 意思是同类事物的最高标准。 The iPhone is the gold standard in the smartphone market, iPhone是智能手机市场上最棒的产品。曾带领加州大学洛杉矶分校十次赢得

发表于:2019-02-18 / 阅读(131) / 评论(0) 分类 英语每日一词

今天我们要学的词是gold standard。 Gold standard, 意思是同类事物的最高标准。 The iPhone is the gold standard in the smartphone market, iPhone是智能手机市场上最棒的产品。曾带领加州大学洛杉矶分校十次赢得

发表于:2019-02-18 / 阅读(77) / 评论(0) 分类 英语单词荟萃
学英语单词
accidental criminal
acoustic mass
aerospace safety
afroasiatics
air cycle machine
alcohol brake fluid
archival permanence
armature leakage
bdelloplast
benzylmalonic acid
bioplasminogen
body skeleton
boom slew
broad-leaves
Bulbophyllum stenobulbon
cable cord
capricia
CIC (compensated ionization chamber)
coagula
countably infinite set
cyperolone
dasht-e-kavirs
Depene
derailing apparatus
desids
didn't
dodecaneses
double integrating range unit
drug enforcement
dynamic determination
editorial-we
El Dorado, Mount
enanth(yl) ic acid
ergatocratic
essence of crime
flourbag
fogage
fundamental constants
furred ceiling
gas-fire radiant
hard materials
holding-down plate
hysterogenic zone
internal concrete vibrator
introduction pneumatic valve
isobaric (analysis)
laser boresight
legal status
liver-transplant
lovey-doveys
Lysionotus angustisepalus
make a mouth upon
maprotyline
margetine
Markham L.
Mary Leontyne Price
mess together
method of certification
motion curve
neutron blanket
North-Central Prov.
observable subspace
OIPH
oocyan(in)
overtires
pellegrino
percutaneous transhepatic cholangiography
phoneticization
platorchestia paludosus
Potts tester
pre-dental
Pseduomonas-aeruginosa
pseudostrabism
quasi-martingale
quiddative
recipient channel
refuse wood
scour culvert
sealing concrete
seasonally adjusted time series
sensory training
short filler cigar
single communication line
stalk off
strong-waters
subgrid scale turbulence
subhierarchies
sulfur laser
sweat equity
tenor slide trombone
trap-water purification
trichoptilosis
truck with elevatable operation position
Tuberculum majus
unreverberant
version control
white shirts
within estimator
wooden truss
woven cotton fabrics
yellow rattle
zhai