[化] 主点

principal point的用法和样例:

例句

  1. The principal points of a thin lens coincide at the center of the lens.薄透镜的两个主点与透镜中心相重合。

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It was the first day of school. As the principal made his rounds, he heard a terriblecommotion coming from one of the classrooms. He rushed in and spotted one boy, taller than the others, who seemed to be making the most noise. He seized the lad, dra

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学英语单词
4-fluoro-2-methylantha-quinone
aapas
air compensating jet
ambon (amboina)
Angelica forrestii
appreciable error
Bacillus coli similis
be death on
bearing span
blow nozzle
broken-marble patterned flooring
cable railway carriage
calycinoides
Caragana leucospina
carpal
checkout rack
cloud nine, Cloud Nine
cold-bottling
Comte, Auguste
conceded
congregatest
contact ratio
crave
Delille
deterministic safety assessment
disruptiveness
double rotary engine
dual-ratio control
ductile solid
earth-retaining wall
elbow supporter
Eleutherococcus stenophyllus
embedded blank
Engenheiro Beltrão
ergogenic
eye bud
fonst
fridge magnet
gaul
glomerulus
go home to
grand champion
group of scissors crossing
guided missile wire
hand waving
hard pellet
heatup
hemiarid fan
homopetalous
hydrothionemia
hyperextend
imprecation
imprudency
indicating device bridge
interference due to software tool
ipe (abbreviation)
JTD
jump spark coil
kosherized
kostunica
lactarine
lay plans
lignum santali
maturons
mechanical scanning
meestair
Microcachryidites
MIG gun
mitten
monolobular cirrhosis
multiaperture reluctance switch
Mus rattus
N-benzoyl-N-phenyl-hydroxylamine
optimum pairing of unit
organdie
partial penetrating keratoplasty
Pokataroo
Position limits
Poundland
pre-shunt
primary holes
pufferfish
raft spider
rambadran
resis
reversing-type actuator
revolving loans
riding-habits
rosellinia merrillii
semantic differential method
set a bridle on one's passion
ship's boiler
shockingness
strain control
sweat pen
tear sb's heart out
telega(u)ge
terror-strucks
translation operation
Urdzhar
vestigal
volutin granules