71.   The report called existing public health surveillance systems inadequate to detect threats from new diseases and the re-emergence of old ones.

72.   The researchers also searched for cases outside Britain and found no similar pattern in countries that had a similar surveillance system.

73.   The Sivam is a surveillance system to monitor air traffic, drug-smuggling and ecological vandalism in the Amazon.

74.   The South Korean government likely will delay by one year selecting its new surveillance system, Boeing officials said yesterday.

75.   The United States has no coordinated national surveillance system for tracking antibiotic resistance in all states.

76.   There are two general types of surveillance systems.

77.   There are now so many cameras attached to so many different surveillance systems in the U.K. that people have stopped counting.

78.   There has been speculation that they could be melted down or entombed in concrete, discarded into the sea or kept in locked bunkers monitored by sophisticated surveillance systems.

79.   There are only two other surveillance systems in the world that could compete with JSTARS in the bidding, according to Northrop Grumman public affairs director Larry Hamilton.

n. + system >>共 804
computer 5.46%
school 2.85%
defense 2.63%
missile 2.33%
justice 2.00%
pressure 1.82%
tax 1.74%
security 1.68%
cable 1.60%
control 1.49%
surveillance 0.49%
surveillance + n. >>共 180
camera 18.12%
plane 11.63%
system 8.75%
flight 7.70%
equipment 5.76%
aircraft 4.09%
mission 3.09%
tape 2.72%
operation 2.67%
videotape 1.73%
每页显示:    共 166