空气污染

By the early days of 20 century, the proportion of negative ion in the aerosphere is 2 to 1, however basis on the recently data, the proportion just opposite become 1 to 2, this is attributed by the pollution of the air, water and other kinds of contamination.

这都是归因於人为因素对大自然迫害所致，像是空气污染、水源污染以及其他的有害污染之故。

According to people who had moustaches, inhaling the air component quantitative analysis and found that the air sucked into the presence of dozens of hazardous substances, including phenol, toluene, acetone, isoamyl asked diene, and other carcinogens,, Who had moustaches, who inhaled the air pollution index, is 4.2 times that of ordinary air.

据对留有胡子的人吸入的空气成分进行定量分析，发现吸进的空气中含有几十种有害物质，其中包括酚、甲苯、丙酮、异戊问二烯等多种致癌物，留有胡子的人吸入的空气污染指数，是普通空气的4.2倍。

Our kids are not capable enough to solve air pollution, oil pollution, light pollution and noise pollution.

现在我们还小，没有能力去解决空气污染，石油污染，光污染，声污染为环境带来的破坏。

Main types of indoor air pollution for formaldehyde, benzene caused by chemical pollution, biological pollution caused by bacteria and viruses radioelement and dust caused by the physical pollution.

室内空气污染类型主要为甲醛、苯引起的化学污染、由细菌病毒引起的生物污染及由放射性元素和尘埃引起的物理污染。

Since people are the major contributors to air pollution , people can also reduce the cause of air pollution .

因为人类是造成空气污染的主要原因，人类也可以减少空气污染的溯源。

Based on international front and hotspot in atmospheric chemistry and aerosol study, considering domestic characteristics of atmospheric pollution, the laboratory has included main research areas below: atmospheric chemical reaction, aerosol chemistry, photochemical pollution, acid deposition chemistry, atmospheric brown cloud, emission characteristics and emission factors of PM and VOCs emitted from various sources, indoor air pollution and its control techniques, health effect of particulate matters, and so on.

研究室的主要研究方向始终瞄准国际大气化学和气溶胶研究和发展的前沿和热点，结合中国大气污染的自身特点，在大气化学反应、气溶胶化学、光化学污染、酸沉降化学、大气棕色云、各种污染源颗粒物和 VOCs 的排放特征和排放因子、室内空气污染及其控制、大气污染的人体健康效应等方面进行实验研究，在上述各方面得出具有国际先进水平的研究成果，建立国内领先和国际先进的学术研究和实验科学体系，确保研究室的学术地位和知名度，与国外相关的研究机构保持同步的发展态势并建立平等的交流机制。

Why did she choose an LEV? She drives her rather big-boned son to school and prefers an LEV to a gas-powered scooter, pointing to the endemic air pollution hanging over the city.

在被问及选中这辆车的理由时，她指着城市上空的空气污染解释道她必须送块头大的儿子去上学，但是为了降低本地城市的空气污染，她宁可选择电动车，而不要燃油的踏板摩托车。

Or, he hypothesizes, fast-food joints might be markers for other neighborhood risk factors, such as air pollution ( previous research by Morgenstern's team linked air pollution to stroke ), lack of access to parks for doing exercise ( one study showed that brisk walking for even a half hour each day lowered stroke risk ), or perhaps even high crime rates, which might create a stressful environment ( some researchers have suggested that high stress can up stroke risk by as much as 40 percent ).

比如，空气污染（Morgenstern之前的研究就认为得中风跟空气污染有关），缺乏像公园这样的健身场所（有研究表明每天哪怕就散步半小时，也能减少得中风的发病率），甚至是高犯罪率造成的紧张环境（有些学者认为高度的压力能提高中风发病率高达40%）。

The results of the case study show that the government subsidy can increase the fuel-cell bus usage of bus operators, and at year 2021, fuel cell buses will have the competitive advantage over oil-fueled vehicles.

研究结果显示，透过政府之补贴可提高公车业者使用燃料电池公车之意愿，至2021年左右，燃料电池公车相对於燃油公车已具有相当程度之竞争力；此外，公车业者未来使用量愈多，空气污染之减量成效愈彰，能源节约效益亦随之愈大；在多次绩效补贴方面，补贴额逐年减少，且越晚采用补贴次数越少，至2021年左右，因燃料电池公车系统之总成本低於燃油公车系统总成本，故自该年起可停止实施绩效补贴；在外部成本改善之效益方面，改善空气污染之绩效补贴初期较不具效益，但透过政府部门相关之补贴机制，其成本效益将逐渐彰显。

In this experiment some factors such as the metal ion content, the power of microwave radiation, and the time of microwave radiation, the pressure and the volume ratio of solvent phase-to-oil phase were investigated.

随着汽车工业的发展和柴油机车应用的日益广泛，柴油机车尾气排放的NOx对空气的污染，已造成一些大城市空气污染由煤烟型过渡到机动车型[1]。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。