放射性碳示踪物

Lake Sediment Could Better Date Ancient Finds Radiocarbon dating is the best-known and most widely used method to determine the age of organic material, such as bone or wood or plant matter. All such material contains radioactive carbon atoms, known

发表于:2019-01-14 / 阅读(45) / 评论(0) 分类 VOA标准英语2012年(十月)
学英语单词
a infant in arms
acicular
aging register
analytic representations
arbitrements
aristocratism
association trail
attitude reconstruction
barium bisulfide
bayesian probability point
bazex's syndrome(acrokeratosis paraneoplastica)
be under fire
bicubic spline functions
birchy
blockslide
boundary scattering
brownification
capacigraph
carbon implant
Charlotte Town
chlorenchyma
chrysamminic acid
Churayevo
clairon
continuous fins
crystal healing
Dahomean
dimethicones
displacing solution
door hanger sheave
empty car
essential hypertension
full language
genus Tiarella
grogginesses
ground interrogator transmitter receiver
growth cycle
gulaglike
handservant
harp(-)antenna
heavy route earth station
heterosynaptic
honesses
Honton
hook-nose
indefinite tenure
infrasternal
inter-cultivation
international auditing standards
inverted image telescope
IPWMI
ksa
levogiration
light recycle stock
line quadrupler
logical file structrure
lower oil header
manoons
martha beatrice potter webbs
masking value
maximum flood discharge
melanoblastosis
meshing needle
mesochoroidea
mezzo forte
Microula pustulosa
mid-summers
mixing paddle
nonexhibit
paper tape type
pill rolling tremor
pressure-gauge
ptrd
ride out
rigging band
roll one's hoop
Romaine R.
satin leaves
schisis
seed-lip
semi-proletarian
single punch press
sinusoidally
sober-minded
soil secondary mineral
soldered splice
stern bush
superposition graph
surveillance sample holder
tee saddle joint
time wage rate
time-fillers
TKIP
total stocks issued
towering missile
treatize
Triarthrus
Tursunzade
unlit mark
w.f.
Yébé
Zabbai