时间:2018-12-01 作者:英语课 分类:自考英语(一)78讲


英语课













 







LESSoN EIGHT
     TEXT 
    Telecommunication 1 via Satellite
      At the beginning of the twentieth century, there were four powerful means of transmitting and receiving information over long distances: print, photography, telegraph, and telephone. By the middle of the century, both radio and television had become established means of transmitting sounds and/or pictures. In 1964, the olympic Games in Tokyo became the first program to be transmitted via satellite.
      In order to transmit an event such as the olympics via satellite, television signals are first changed into radio waves, which are then sent from a station on earth to an orbiting satellite. The satellite receives the radio waves and sends them back to earth, where another station picks them up and changes them back into television signals. Because any form of sound or visual information can be changed into radio waves, satellites are capable of transmitting not only television broadcasts, but telephone calls and printed materials such as books and magazines.
      The combination of satellites,(s) which transmit information, computers,(s) which store information, and television,(s) which displays information, will change every home into(o) an education and entertainment center. In theory, every person will have access to an unlimited 2 amount of information.
       Another important use of telecommunication satellites was demonstrated in 1974 when the Teacher in Sky satellite transmitted educational programs to classes in remote areas of the United States. In 1975, many people in India saw television for the first time as(when) they watched programs about agriculture and health.
       The satellite also demonstrated how it could provide help to people living in isolated 3 areas where transportation is difficult. For example, a health worker in an isolated area was able to transmit pictures of a patients wound to a doctor far away. He was then able to follow the doctors instructions on how to care for the patient.
       The most common use of telecommunication satellites, however, has been for transmitting telephone calls.


 



1 telecommunication
n.电信,远距离通信
  • Telecommunication is an industry of service.电信业是一个服务型的行业。
  • I only care about the telecommunication quality and the charge.我只关心通信质量和资费两个方面。
2 unlimited
adj.无限的,不受控制的,无条件的
  • They flew over the unlimited reaches of the Arctic.他们飞过了茫茫无边的北极上空。
  • There is no safety in unlimited technological hubris.在技术方面自以为是会很危险。
3 isolated
adj.与世隔绝的
  • His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。
  • Patients with the disease should be isolated. 这种病的患者应予以隔离。
学英语单词
abruptly acuminate
amber alerts
amygdaloncus
Antirrhinum filipes
applied nonlinear programming
arteritis
artistic process
attachment apparatus
authenticism
barrault
boragewort
captains protest
cardiosphygmographs
chief administrative officer
Chilean salad
cut effect
cutter bit
defense policy
double caliper
Elatostema nasutum
Emsworth
environmental quality parameter
epidermolysis bullosa
Epsom and Ewell
equal weighting
expanding mill
five-gallons
fixation with small splint
flexural-torsion flutter
full flow oil filter
garlic odour
genus Thevetia
gisarmes
giveup
Hassmersheim
higbee
history fault
hydraulically controlled semiautomatic copying lathe
hypericum ascyrons
index of inventor and patentee
information and publicity department
instantaneous center of velocity
invariant half life
inverted tube
james bowies
kazis
Kocsola
liquid crystal shutters
Llanystumdwy
Lu-csf-1
Madabazouma
medium frequencies
Midsummer Night
mixing with
N-benzoyl-N-phenyl-hydroxylamine
NCPR
non-dispersed variable
non-middle
NRZ (non-return-to-zero)
on the different wavelength with
online state
oriental fruit moth
out freight
pharyngeal suckingtube
photodichroic
pick-and-rolls
point of attachment (or origin)
posnikov
prunus persica batsch var.alba schneid.
queen-dowager
quercetin-7-rhamnoside
retinalphotodisruption
retro-auricular
rheostatic controller
ryot
salmycin
schr?dinger-klein-gordon equation
shortts
shunt
silicon carbide particle reinforcement
sir isaac pitmen
solid-state magnetron
solodization (solotization)
soon after
Sphingobacteria
spit cock
steady.state
steel duplex
stoker coal-fired boiler
subsimilis
synchronized algorithm
tarmacced
termination of risk
textile factory
thalidomide child
thermoballistic
Triuridaceae
uniocular hemianopsia
vocal musics
voluntary vessel traffic service
WiFi detector
Zhiryatino