时间:2019-03-06 作者:英语课 分类:英语时差8,16


英语课

Although audio tapes and video tapes look different, they’re based on the same principles. Each has a roll of magnetic material which slides past the so-called “playback head” in the VCR or cassette deck (cassette decks have one playback head, VCRs have two or more). In both machines, these heads detect changes in magnetism 1 as the tape moves by. The changing magnetic signal is translated into music on your tape deck, or both video and sound on your VCR. Without a changing magnetic signal over a playback head, you’d get no sound, no picture.



n.磁性,吸引力,磁学
  • We know about magnetism by the way magnets act.我们通过磁铁的作用知道磁性是怎么一回事。
  • His success showed his magnetism of courage and devotion.他的成功表现了他的胆量和热诚的魅力。
学英语单词
acquirers
aerial cabotage
affiliated group
afterschool club
ALT F
altitude air valve
analysis of time series
anaseism
Balkan Pen.
be top dog
Belviran
Braid's strabismus
capsule ink
cavum thoracis
coexistents
CONPADRI
continuous furnace
crinum
cudrania fruticosa wight et kurz
design equation
dial guard ring
diamondbacked
diandric
dispension
dynamic function survey meter
dynamic manipulation of picture
enable pulse
Ethyl-2-hydroxy-iso-butyrate
external gear pair
facette
Finkelnburgia
flash reducing propellant
fluoroaluminate
foreign currency bills bought
fragrantness
geometrical continuity
get off the phone
hang in there
hydrogen fluorides
ill-thoughts
Imanombo
increase by degrees
incudate
inherent colour
intensity-scale
jackshaft switch
Japygidae
kipple
Labriola, Antonio
little pitchers have big ears
load limiting device
local mounted
lysiteles amoenus
meanwhilst
medical-products
Memling, Hans
miniature brush
Morus
nasopalatine
neolitsea chrii merr.
nonendioic acid
normal zone of fire
order to show cause
oxidation-reduction reaction
Palaearctic
pauropodids
pavement apes
pedogeochemical prospecting
phylum Acanthocephala
rade conveyer
red-dwarf
regional authorities
revived stream
Rinzai
rippling device
roar like a town bull
rokkakus
Romayne
Saussurea semiamplexicaulis
Schönthal
seeker antenna
shielding
silochrom
spherical distributions
sprayer and duster
Storstrφmmen
sudden rupture of rail
sulfaisodimidine
swm
taiwan blue magpie
tare deduction
timberings
tiomen
Tiruvettipuram
track and field events
unfold to
united nations office for drug control and crime preventions
us space
Vaternish Point
welding up
working profile
zero phase-sequence resistance