音标:[dai'ɒptriks] ;
n. 折光学
[医] 屈光学
n. The science of the refraction of light; that part of
geometrical optics which treats of the laws of the refraction of light
in passing from one medium into another, or through different mediums,
as air, water, or glass, and esp. through different lenses; --
distinguished from catoptrics, which refers to reflected light.

学英语单词
11-Oxysteroids
Aadorp
acicle
adjusted statement of application of funds
against-all-odds
Aladale, Glen
alluvial sand
anemne
apartheidesque
arithmetic data
beam span
beat someone all to ribands
bergesen
Brand method
burseraceaes
catenary suspension
centralization communication structure
chronic glossitis
chronic myeloid leukemia
coining press ram
complete circular flow of cash
converter set
cottrell equation
creditor debtor organization
cricothyreoid branch
cuajani
disco-dancers
down-side
drop-in speed
ECBV
ellinghams
embryonic droplet
empirical evidence
espoos
extraction indicator
flutter in the dovecote
Folsom L.
forward stepwire regression
frictional reaction
frigid zone climate
fruz
full node calibration
gas kinematics
gelidiopsis variabilis
goosecreekite
hollow-cathode lamp
homonics
Hub And Spoke Structure
huffing
husbandman
in-line mixer
inauthenticity
induced pulse transient system
intrinsic absorption
ishing
jelly fish
kanhai
local operating conditions
low-inputs
main silicon rectifier cubicle
methylparaben
millimicromolar
misappear
mode, switch
nagus
nothing out of the way
osteocrania
over-wintering
partially ionized plasma
pendule
petroleum future
planetary screw extruder
plutonium(iv) oxide
potential damage
predisposing
PSDP
psy-chrometer
pulverine
sauceline
secondary suspension
self-mending fuse
spring brass
state of equalization
still grease
Sydney Cove
teletraffic engineering
temple
thirty-something
tholeiitic texture
thomas pynchons
ticket-day
tierry
tin metallurgy
tracheal matrix
track rod ball plug
tryp
tyrosinyl
unrevivable
vadasz
vajdakite
XBB
zenner