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Tracking Dinosaur Family Values
- 2005-12-30 13:37:00
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Ancient Life Did fierce, predatory dinosaurs value their family ties? In the 1920s, paleontologists working in Mongolia discovered fossilized nests, which hinted that some dinosa...>>查看全文
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Maybe Dinosaurs Needed Flea Collars, Too
- 2005-12-30 13:37:00
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A beautifully preserved fossil excavated from a volcanic crater in Germany is clarifying the origin of the lowly louse, a ubiquitous creature whose history had been oddly absent ...>>查看全文
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What is digital TV?
- 2005-12-30 13:36:00
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Digital television is based on the idea of recording information in a digital, rather than an analogue format(模拟形式). The idea is to reduce the information to a series of elec...>>查看全文
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什么叫"蓝牙"？What is Bluetooth?
- 2005-12-30 13:35:00
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什么叫"蓝牙"？What is Bluetooth?
Bluetooth is a universal radio interface in the 2.45GHz frequency band that enables portable electronic devices to conne...>>查看全文
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考研阅读的5个关键因素
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