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co2造句
241. The separation of boron isotopes is studied by tunable TEA CO2 superradiance laser. 242. Over the world's tropical forests, this extra "carbon sink" effect adds up to 4.8bn tonnes of CO2 removed each year - close to the total carbon dioxide emissions from the US. 243. Obejective The approach of the contrast of verruca plantaris curative effect between the methods of Aloe ectal strap and CO2 laser. 244. This paper introduces inverter technology and uses IGBT as power component to research high performance and high efficiency CO2 arc welding power source. 245. Porous structure characteristics of coal in outburst zone was studied by pressurized mercury method and CO2 absorption method. 246. Thus C4 plants lessen photorespiration by carrying out photosynthesis only in cells that are insulated from high levels of CO2. 247. Apart from light alkenes, CO prevailed in the produced COX while the selectivity to CO2 was always below 1 %, so the efficient utilization of carbon resources in the GOC process is high. 248. This paper introduces the testing method of deposition efficiency of CO2 welding of bare wire. 249. Objective To summarize the application of CO2 laser in oral dentofacial surgical disease treatment. 250. The study, published in the September issue of the Journal of the Geological Society, found that increasing CO2 levels caused foram diversity to fall from 24 species to only 4. 251. But a report published this week by the OECD, a rich-country think tank, notes that households use up to 30% of global energy production, and emit 20% of its CO2 emissions. 252. Researchers fret that many species of invertebrates will disappear as the oceans acidify due to increased levels of atmospheric carbon dioxide (CO2). 253. Others include shrouding Earth in sun-reflecting aerosol particles, manufacturing CO2-absorbing artificial trees, and pumping CO2 into underground reservoirs. 254. You're listening to Carol Turley, a senior scientist at the Plymouth Marine Laboratory in the U.K. Her research confirms that oceans are acidifying from atmospheric CO2. 255. The package also includes provision for 12 pilot projects on carbon capture and storage — using novel technology to collect CO2 emitted from power stations and bury it underground. 256. The optimal conditions for aglycone tyrosol extraction from Rhodiola were investigated by using supercritical CO2 extraction technique. 257. Pump enough CO2 into the sky, and that last part per million of greenhouse gas behaves like the 212th degree Fahrenheit that turns a pot of hot water into a plume of billowing steam. 258. The genetic model of the Changdedong CO2 reservoir is "self-generation and self-accumulation", and the CO2 gas is mainly CO2 derived from the depth and adsorbed by volcanic rocks. 259. Formate and H2/CO2 could be utilized as substrate but not acetate, methanol, trimethylamine or secondary alcohols. 260. To simplify the technological process of hydrogen production from COG, a technical program using WGSR, which convert CO in the Coke oven gas to H2 and CO2, was proposed. 261. Of course, without some greenhouse warming, the earth would be a cold, dead place, but too much CO2 accelerates the effect and could make the earth too hot to be habitable. 262. The Supercritical CO2 extraction of Diosgenin from fresh, dry powder and hydrolyzed Dioscorea nipponica on different entrainer conditions was studied. 263. Shielded Metal Arc Welding, Submerged-arc Welding and CO2 Arc Welding are recommended for base layer welding. 264. If Mr. Wheeler's car is in compliance with the EPA's upcoming 2012 carbon dioxide emissions guidelines, his drive will produce 20.9 pounds of CO2 per day. 265. In this paper, such factors affecting the supercritical CO2 extraction of zanthoxylum oil as extraction pressure, temperature, and time were studied with orthogonal experimental design. 266. That the digital twin-wire welding power supply could achieve twin-wire CO2 welding effectively was proved by experiment results, and the welding performance well. 267. To evaluate the surgical techniques and clinical effects of CO2 laser for treatment of hymenal fimbria. 268. Rising average temperatures, for example, threaten to unlock long-frozen stores of carbon dioxide and methane -- at least 20 times as potent a greenhouse gas as CO2 -- from the region's permafrost. 269. The TLV-TWA for CO2, as listed by American Conference of Governmental Industrial Hygienists and by the Occupational Safety and Health Administration, is 5000 parts per million, or 0.5%. 270. The campaign marked a step change in the tone of the government's marketing around its Act on CO2 initiative.