氧气

The results indicated the ally1 carbon of cyclohexene was catalytically oxidized by molecular oxygen at atmospheric pressure in the presence of the polymer complex and a trace of HOAc at 70℃, which afforded corresponding alcohol, ketone and hydroperoxide acting as intermediate.

结果表明，70℃时，以微量醋酸为添加剂，在催化剂的催化作用下，以常压氧气氧化环己烯，得到烯丙基位的氧化产物环己烯醇、环己烯酮和中间产物环己烯过氧化氢。

According to measurement, in summer the temperature in the park is 7 to 8 degrees of centigrade lower than that in surrounding areas; in winter, the temperature gains 4 to 5 degrees of centigrade and the humidity has an increase of 10% to 20%. Such a green corridor can produce 6,000 kilolitres oxygen and absorb 8,000 kilolitres carbon dioxide everyday. It play an immeasurable role in improving the environment of the heart of capital by preventing dust, reducing noise, killing bacteria.

据测算，公园夏天的温度将比周边低7至8摄氏度，冬季温度则增加4至5摄氏度，平均湿度会增加10—20%，这条绿色长廊每天可制造氧气6000公升，吸收二氧化碳8000公升，并具有防尘、减噪、杀菌诸多功能，对改善首都中心地带的生态环境起到不可估量的作用。

Experts believe the project with the traditional lead-smelting technology, has the following characteristics: First, the smelting process to adopt internationally advanced level of oxygen blowing at the end of smelting - to restore the blast furnace method, the use of lead refining electrolysis ; Second, the use of sulfur dioxide gas double-absorption acid technology, the production of domestic water use of recycled water sewage treatment process; Third, the use of waste heat for power generation, waste to make full use of energy reduces energy consumption; Fourth, the high level of automation, low power consumption , Investment, raw materials adaptable, comprehensive recovery rate of high-quality products.

专家认为，该项目与传统炼铅工艺技术相比，具有以下特点：一是冶炼工艺采用具有国际先进水平的氧气底吹熔炼-鼓风炉还原法，铅精炼采用电解法；二是二氧化硫烟气采用两转两吸制酸工艺，生产生活用水采用循环水污水处理工艺；三是利用余热发电，充分利用废弃能源降低了能耗；四是自动化水平高、能耗低、投资省、对原材料适应性强、综合回收率高、产品质量好。

Oxygen is not only a life-sustaining element to the existence of organism but also a key regulatory factor in cells physiological function.

氧气是机体生命活动所必需的重要元素，氧的供应不足会导致细胞的生长、分化和凋亡发生不同程度的异常改变。

He will be linked to the spacecraft by two lifelines that will supply oxygen and communications.

两条输送氧气，保证通讯的生命线将他和飞船连在一起。

Form the liver of shark, whose main function is supply oxgen, activate cells.

500mg×100粒美国生命力角鲨烯提取深海鲨鱼的肝脏精制而成。角鲨烯主要功能能是补给氧气、活化细胞。

Form the liver of shark, whose main function is supply oxgen, activate cells.

角鲨烯提取深海鲨鱼的肝脏精制而成。角鲨烯主要功能能是补给氧气、活化细胞。

Form the liver of shark, whose main function is supply oxgen, activate cells.

美国生命力角鲨烯提取深海鲨鱼的肝脏精制而成。角鲨烯主要功能能是补给氧气、活化细胞。

He extinguished the candle by a sharp expiration of breath upon its flame, drew two spoonseat deal chairs to the hearthstone, one for Stephen with its back to the area window, the other for himself when necessary, knelt on one knee, composed in the grate a pyre of crosslaid resintipped sticks and various coloured papers and irregular polygons of best Abram coal at twentyone shillings a ton from the yard of Messrs Flower and M'Donald of 14 D'Olier street, kindled it at three projecting points of paper with one ignited lucifer match, thereby releasing the potential energy contained in the fuel by allowing its carbon and hydrogen elements to enter into free union with the oxygen of the air.

38他猛地朝火苗吹去，把蜡烛熄灭。将两把匙形木椅拖到炉边，一把是给斯蒂芬准备的，椅背朝着面临院子的窗户，一把是自己坐的。他单膝着地，往炉格子里放了些粘着树脂的枝条和五颜六色的纸张，以及从坐落于多利埃街十四号的弗罗尔与麦唐纳公司的堆置场以每吨二十一先令的代价买来的优质阿布拉莫木炭。他把这些都十字交叉地堆成不规则的多角形，划了一根安全火柴，在纸张的三个角落点上火。这样，燃料里的碳和氢这两种元素就与空气中的氧气自由化合，散发出潜在的能量。

Smoking cigarettes adds to the Computer Desk Computer manufacturer computer mouse Computer Computerized collar knitter machine Conduit Bodies construction board Container Bag Control Arm Cooking Thermometer general levels of air pollution as well as damaging our health.

吸烟不仅对健康有害，而且增加空气污染程度。香烟雾含有多种有害物质：不仅有致癌化学物质、有某种能阻止氧气进入血液的气体，还有引起血压增高、心速加快的被称为尼古丁的物质。

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。