同时甘蔗也是光合效率最高的碳四作物。
Sugarcane belongs to Hatch-Slack crop and fixes solar energy efficiently.
重点包括干气中乙烯的利用、液化气中丙烯和碳四的利用。
They mainly includes the utilization of ethene in dry gas and of propene and butylene in liquified petroleum gas.
介绍了乙烯装置副产碳四烃资源情况，以及国外碳四烃利用技术的进展。
The by-product C_4 hydrocarbon resource from ethylene plant and comprehensive utilization of C_4 hydrocarbon in foreign countries is introduced.
针对我国现有乙烯装置副产碳四烃的利用现状，提出碳四烃开发利用的建议。
Suggestion about development and utilization of C_4 hydrocarbon has been put forward in the light of domestic actual circumstances.
利用蒸汽裂解和炼油工艺的碳四和碳五馏分生产丙烯是增产丙烯的一条重要途径。
Technologies for propylene production by using C4 and C5 fractions as feedstock coming from steam cracker and refineries are reviewed.
通过分析丙烯和混合碳四产品损失大、收率低的原因，提出对策并采取相应措施，从而有效地提高了丙烯和混合碳四产品的收率。
Reasons for the low yields of propylene and mixed C_4 are analyzed and countermeasures are put forward, thus the yields of propylene and mixed C_4 are effectively improved.
中国石油兰州石化公司合成橡胶厂将碳四、苯乙烯、丙烯腈-丁二烯-苯乙烯嵌段共聚物等装置的凝结水收集后，先用于丁腈硬胶聚合用盐水的加热，换热后的回水再用于凝聚和洗涤用水；
The condensed water from plants of C4 , styrene and ABS was recycled and applied to heat salt water in production of acrylonitrile-butadiene rubber, and then used for agglomerating and washing.
红细胞膜的微粘度值与花生四烯酸和二十二碳六烯酸负相关。
The microviscosity values of erythrocyte membrane were negatively correlated with the arachidonate and docosahexanoate.
在全球范围看，森林以及林下土壤吸收了大约四分之一的碳排放。
Across the world, forests and the soil beneath them absorb about a quarter of all carbon emissions.
城市居民的碳足迹其实是相对小的，这就是大卫·多德曼在《环境和城市化》的四月刊号中提出的发现。
The carbon footprint of urban dwellers is relatively light, says a report by David Dodman in the April issue of Environment and Urbanisation.
苏格兰泥潭沼泽地吸收了英国生态系统中四分之三的泥炭——这相当于化石燃料燃烧一个世纪所排放的碳量。
Scottish peat bogs hold three-quarters of all the carbon in British ecosystems - equivalent to around a century of emissions from fossil fuel burning.
在英国，超过四分之一(27%)的碳排放来自家庭住宅，大大增加了全球变暖的危险。
More than a quarter (27%) of UK carbon emissions come from households, adding considerably to global warming.
比如英国航空公司就在过去四年里提供碳补偿项目，发现只有3%左右的顾客会购买。
BA, for instance, has been offering carbon offsets with its flights for the past four years, but finds that only around 3% of customers buy them.
该公司还执行着全球四大碳捕捉方案中的两项。
It also runs two of the world's four big carbon-capture schemes.
令他吃惊的是，他发现蜡烛里的碳已经形成了纯碳的四种形态，包括：钻石、石墨和铅笔芯。
To his surprise, he discovered that the carbon in the candle wax had formed all four types of pure carbon, including diamonds and graphite, or pencil lead.
在最初的四年中，这个项目的目标是汇聚800家公司，减少365，000垃圾产生，并且减少99，000碳排放量。
In the initial four-year stage, it aims to bring 800 companies together, reduce 365, 000 tonnes of landfill waste and 99, 000 tonnes of carbon emissions.
超过四分之一的工业碳排放以这种形式流动，超过1990年的五分之一。
Just over a quarter of all industrially emitted carbon moves about in this way, up from a fifth in 1990.
今天四处延伸铁路最后会给那些新的“碳中和”的邻居让出道路。
Today's sprawl of track will make way for new "carbon-neutral" neighbourhoods.
今天四处延伸铁路最后会给那些新的“碳中和”的邻居让出道路。
Today's sprawl of track will make way for new “carbon-neutral” neighbourhoods.
他们没告诉你的第四件事：冲茶和咖啡的碳足迹的多少不在于用了多少开水，而在于烧水壶的形式。
What they don't tell you: It's not just how much water you boil that determines the carbon footprint of your tea or coffee, but also the type of kettle you use.
那么碳有四个价电子。
就像Hazen博士指出的那样，碳是宇宙中含量排第四的元素，仅落后于氢，氮和氧。
As Dr Hazen pointed out, carbon is the fourth-most-abundant element in the universe, after hydrogen, helium and oxygen.
在希腊地层(Hellenistic layer)之下的建筑中，加芬克尔找到了四个橄榄核，经碳-14分析确定其年代为公元前1000年左右。
Beneath that Hellenistic layer he found buildings scattered with four olive pits, which carbon-14 analysis dated to around 1000 B.C..
谬论四：核能比其他低碳电力资源更廉价
Myth 4: nuclear power is cheaper than other low-carbon sources of electricity
碳呢？我听到了四个和六个。
传统的放射碳断代法是一种现学现卖的技术，但地层学与之不同，Bayliss博士认为培养一名完全掌握此项新技术且具有硕士学位的研究人员得需要三到四年的时间。
Unlike traditional radiocarbon dating, which can be bought off the shelf, Dr Bayliss reckons it takes between three and four years to train a graduate researcher to use the new technique properly.
5盎司一罐的Joose或Max果味充碳麦芽酒精饮料含有和四支普通啤酒或五支清淡啤酒相当的酒精。
The carbonated malt beverages come in fruity flavors, and one 23.5-ounce can of Joose or Max has about the same alcohol content as four regular or five light beers.
净石油现价是Correa先生预期达到的欧洲碳排放信用额市场价的四倍多。
The oil’s net present value is over four times greater than the market price of the European carbon credits Mr Correa hoped to obtain.
净石油现价是Correa先生预期达到的欧洲碳排放信用额市场价的四倍多。
The oil’s net present value is over four times greater than the market price of the European carbon credits Mr Correa hoped to obtain.
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