[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

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学英语单词
AACSA
acanthofungus rimosus
affective communication
allylene oxide
aluminium sulphide
ammonia chloride
apoatropin
assay dish
aurintricarboxylic acid
bacterial defect
baiyao
be viewed as
blood substitutes
bloody hell
bruxistic
cement joggle
chalcogen
chessboxer
color washes
compounding of cylinder
condenser leg pipe
cowmilk
current tables
diketotriazolidine
discharging relieving arch
DO-IVF
dressed-down
dumbfounders
exasperaters
Fargesia hygrophila
ferroverdin
fine finishing cut
finished ingot
frequency regulation
ftses
granitas
guacamoled
guinea gold vine
gummi tragacanthae
Gypsophila huashanensis
hardwood tree
hemp leaf beetle
hepatolithiases
homologous serum jaundice
hose-pipe
indicated displacement error
invite to tender
Japanese honeysuckle
lasiosphaeria solaris
last order
leptotrichosis
long time, no see.
love dearly
maazel
machine atten dance
master airway bill
maximum tiller number stage
menari hinei (malaysia)
moon trefoil
mounture
negative potential energy
ornithophilous flower
outward flow strainer
overlay state
passenger route
Pettis County
phreatic water contour
pin chain stenter
preloaded rubber bushing
prick-tree
proostracum
provision of credit test
rain drop erosion
Ranunculus pedicellatus
rate, discharge
rating data
reciprocal axis
rectilinear congruence
regular members
ribes pulchellum turcz
ringtailed roarer
run-around
sawing wood
scarletts
short content list
shuddered at
side fishing
solifluction tongue
Sphenomonas
Sq electric current system
star strut
surface washing
tansus
toxicarioside
traice
trorando
two-sheet detector
underhand stoping
vasotrips
vespiform
wire-cuts