天线辐射机制

60秒科学:Water Blankets Forming Planets

Water Blankets Forming Planets A study in the journal Science finds much more molecular water in regions where planets are forming around young stars. The mechanism to keep the water from being destroyed by UV radiation appears to involve some of the

发表于:2019-01-02 / 阅读(105) / 评论(0)

60秒科学

电信专业英英词典E-1

Earth Station - The term used to describe the combination of antenna, low-noise amplifier (LNA), down-converter, and receiver electronics that are used to receive a signal transmitted by a satellite.

发表于:2019-01-03 / 阅读(53) / 评论(0)

电信英语

NASA找到消失8年的印度首艘月球太空船

US space agency NASA has successfully located India's first lunar spacecraft Chandrayaan-1 that lost contact with ground controllers on Earth eight years ago. 日前，美国航天局NASA已经成功定位到印度首艘月球太空船--月球飞船一

发表于:2019-01-07 / 阅读(30) / 评论(0)

英语新闻

科学美国人60秒 SSS 放射可以帮助心脏恢复节奏

Radiation Might Help Heart Regain its Rhythm That beeping sound is the normal beating of a heart. But here's what the same heart sounds like, during a bout of ventricular tachycardia, or VT the racing beats are caused by an electrical short circuit i

发表于:2019-01-20 / 阅读(34) / 评论(0)

2018年科学美国人1月

VOA标准英语2010年-Airport Body Scanners Called Safe If P

Compared to the dose level of a medical chest x-ray, a backscatter scan is thousands of times lower. Since the Christmas Day attempted bombing of a U.S. airliner, airports are looking for ways to tighten security. One method being adopted by some and

发表于:2019-02-05 / 阅读(40) / 评论(0)

VOA标准英语2010年(三月)

U.S. finds low levels of radiation in milk

WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine（碘） has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai

发表于:2019-02-11 / 阅读(60) / 评论(0)

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abnormal sexual behavior

agricultural aviation

alexeterium

art journal

at your wit's end

autoerythrocyte sensitizition

automatic dumpling-maker