空气污染监测激光器

SCIENCE IN THE NEWS - Findings About Air Pollution and Heart

SCIENCE IN THE NEWS - Findings About Air Pollution and Heart Disease / Fossils from the 'Missing Years' in Africa / U.S. Bans... By Caty Weaver Broadcast: Tuesday, January 13, 2004 (THEME) VOICE ONE:

发表于:2018-12-07 / 阅读(40) / 评论(0)

科技之光

SCIENCE IN THE NEWS - Air Pollution Harms Young Lungs / A Le

SCIENCE IN THE NEWS - Air Pollution Harms Young Lungs / A Legal Settlement Over Teflon By Broadcast: Tuesday, October 05, 2004 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I

发表于:2019-01-02 / 阅读(64) / 评论(0)

科技之光

Beijing unveils new steps to curb air pollution

BEIJING, Jan. 22 (Xinhua) -- Beijing will strengthen its efforts to treat PM2.5 and slash the density of major air pollutants by 2 percent this year, the municipality's acting mayor said Tuesday. The capital will take 180,000 old vehicles off the roa

发表于:2019-02-04 / 阅读(60) / 评论(0)

英语新闻

Beijing plans fewer vehicles on roads during heavy air pollution

BEIJING, Jan. 19 (Xinhua) -- The number of vehicles on Beijing's roads could be cut on days when the city suffers from heavy air pollution, according to a new regulation released for comments on Saturday. According to the Beijing Municipal Air Pollut

发表于:2019-02-04 / 阅读(48) / 评论(0)

英语新闻

Smog disrupts Beijing traffic, flights

BEIJING, Feb.17 (Xinhua) -- Fresh smog shrouded Beijing and some other provinces in China early on Sunday, disrupting highway traffic and flights. Readings for PM2.5, hazardous particles measuring 2.5 microns in diameter or less, exceeded 200 microgr

发表于:2019-02-08 / 阅读(50) / 评论(0)

英语新闻

英闻天下——199 Beijing's Air Pollution Returns to 'Hazardous' Levels

Smog levels in Beijing have hit the 'Hazardous' mark again just 2 weeks after recording one of the worst cases of air pollution. The PM 2.5 monitoring systems in the Chinese capital showed readings of around 400, which is considered hazardous. That's

发表于:2019-02-21 / 阅读(51) / 评论(0)

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activity research

afferent neuron

air lift circulator

anonymous processor pool

antiseptic cotton

band overlap transition

Band-Aids

BECN

biocultural

butyl-alcohol-acetone fermentation

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