首先以茄尼醇合成全反式侧链四十碳十烯-1-醇,再和2,3-二甲氧基-5-甲基-1,4-苯醌的还原产物在无水氯化锌存在下缩合。
All - E long chain part was synthesized from solanesol, then condensed with the reductive product of 2,3 - dimethoxy - 5 - methyl -1,4- benzoquinone in the presence of dry ZnCl2.
不要介意,即使在今后十年这样一段时间里,全球最严厉的碳减排也不能在最轻微的程度上影响冰融。
Never mind that even drastic world-wide reductions in carbon emissions that wouldn't have the slightest affection ice melt over the next decade or so.
就把拯救珊瑚当成是在未来几十年中减少碳排放的众多理由之一吧。
Consider that one more reason - of many - to work to reduce carbon emissions in the decades ahead.
本周,林菲尔德表示,自1990来以来,即便经济增长了50%,瑞典还是将碳排放缩减了十分之一。
Sweden has cut carbon emissions by a tenth since 1990, even as its economy grew by 50%, Mr Reinfeldt said this week.
石油消费量相对较小的马来西亚,也在周三宣布了未来十年大幅削减碳强度的计划。
On Wednesday, Malaysia, a relatively small oil consumer, announced plans to sharply reduce its carbon intensity over the next decade.
劳埃德银行也热衷于放贷给风能以及其他低碳技术项目,但它指出,英国不好好利用现有的北海产地进行石油及天然气的合理开采十分浪费。
The bank is a keen lender to wind and other low-carbon technology projects but argues that it is wasteful for Britain not to squeeze out all the oil and gas it can from existing North Sea fields.
而且在将来,我是说很远的将来,今天的排放将会影响大气中的碳含量几十年,甚至可能几个世纪。
And by later, I mean much later; today's emissions will affect the amount of carbon in the atmosphere decades, and possibly centuries, into the future.
接下来的十年中,该项目将试着去了解地球上所有的碳,而不仅仅是通过大气、海洋和生物循环的东西。
Over the course of the next decade it will attempt to understand all the carbon in the Earth, not just the stuff that cycles through the atmosphere, the oceans and living things.
不要介意于即使在今后十年这样一段时间里全球最严厉的碳减排也不能在最轻微的程度上影响冰融。
Never mind that even drastic world-wide reductions incarbon emissions over the next decade or so wouldn't have the slightest affecton ice melt.
美国人的平均碳排放量和过去的数十年相比基本持平,而且在一些国家的人均的碳排放已经开始下滑,比如法国。
The amount of carbon emitted by the average American has remained fairly flat for the past couple of decades, and per capita carbon emissions have started declining in some countries, like France.
专家说,对珊瑚礁来说,全球大气二氧化碳浓度已经超过了安全浓度,即使最有雄心的未来十年碳减排计划挽救不了它们。
Experts say the world has already passed the safe level of carbon dioxide in the atmosphere for coral reefs, and even the most ambitious carbon cuts planned for coming decades will fail to save them.
经济学家也青睐碳排放价格方案,尤其是通过赋税方式而非“总量管制和交易”体系,这种系统对那些想通过缴纳罚金而制造污染的人十分脆弱。
Economists prefer carbon prices, especially those set by taxes rather than cap-and-trade systems, which are more vulnerable to capture by the polluters they are supposed to penalise.
“就算我们今年制定不出气候法案,说未来十年内不会为碳买单的想法也是极其保守的。”莱纳先生说。
"Even if we don't get a climate bill this year, it's extremely conservative to think there will not be a price on carbon in the next decade," Mr. Lehner said.
但在过去的十年里,由于进口成本较低,家具进口量上升,但其实还是本地制造的家具排碳量更低,更加环保,处于这方面的考虑,我们应当逐步由进口家具向自产家具转变。
In the last decade furniture imports rose due to lower costs, but the concern for a smaller carbon footprint is behind the beginning of a gradual shift towards locally manufactured furniture.
金格里奇相信第一批鲸和沼泽地碳兽十分相似,一种生活在始新世时期沼泽低地里,形似河马的小型食草动物。
Gingerich believes the first cetaceans probably resembled anthracotheres, svelte hippo-like browsers that inhabited swampy lowlands in Eocene times.
近日,中国和印度都宣布了在未来十年削减碳强度的计划。
China and India announced plans in recent days to reduce the energy intensity, or the amount of carbon-dioxide emissions per unit of gross domestic product, of their economies over the next decade.
可是结果如何呢,然而与我想象中的大相径庭的是,我的家庭居然会承担几乎每年十吨的碳消耗量!
And the result? Well not quite what I'd imagined - my family is responsible for almost 10 tons of carbon a year!
东亚地区2020年所需要的一半的能源设施将会在未来十年建设——建什么,怎么建,将会影响2050年之前的碳排放。
About half the region's energy infrastructure by 2020 will be built in the next 10 years-and what gets built, and how, will have an impact on energy emissions until 2050 and beyond.
每公顷泥炭地可储存超过5000吨碳,而当它们被抽干用于耕作时,将会在数十年中排放碳。
Peatland can store over 5, 000 tonnes of carbon per hectare, and when drained for cultivation emits it for decades.
每公顷泥炭地可储存超过5000吨碳,而当它们被抽干用于耕作时,将会在数十年中排放碳。
Peatland can store over 5,000 tonnes of carbon per hectare, and when drained for cultivation emits it for decades.
他们把一个只有十几个碳原子的刚性碳链置于真空室中,并对样品施加425v的电压。
They placed a rigid chain of carbon atoms, just tens of atoms long, in a vacuum chamber and streamed 425 volts through the sample.
超级帅哥乔什·哈奈特在一个反全球变暖的慈善组织中表现活跃,要募集一百万人来减少碳排放,在以下十年中探究自身碳足迹。
Superhottie Josh Hartnett is active in Global Cool, a charity that's trying to get 1 billion people to reduce their carbon footprints over the next 10 years.
几十年前,考古学家就已经开始用一项叫做碳14测年的方法来检测他们发掘的东西有多悠久。
For decades, archaeologists have used a technique called carbon dating to work out how old their finds are.
随着越来越多的油采用蒸汽底驱的工艺进行提取,未来十年内在油砂开采过程中排放的碳可能会增加3倍。
And those from the tar sands could triple in the next decade, as more oil is extracted by steam-based methods.
研究者分析了几十项研究已得出的数据,来确定种植新的生物燃料作物如何影响土壤的碳含量。
The researchers analyzed data from dozens of studies to determine how planting new biofuel crops can influence the carbon content of the soil.
该发现对指导科学家合成纳米碳管和利用该矿床具有十分重要的意义。
It has very important significance for scientist to design the condition of CNTs synthesis and utilize the ore deposit.
如图2.1所示的简化铁碳状态图将焦点集中在共析区,这对理解钢的性能和处理是十分有用的。
A simplified diagram, such as the one in Fig. 2.1, focuses on the eutectoid region and is quite useful in understanding the properties and processing of steel.
指出负离子解吸化学电离质谱对鉴别低碳醣的分子离子可以提供十分有用的信息。
It pointed out that the negative ion DCIMS can provide very useful information for characterizing molecular ion of monosaccharides.
条带结构的碳层与原丝分子链条带结构状态十分相似。
The strip microstructure of carbon layers resembled that of PAN molecular chains in precursor fiber.
条带结构的碳层与原丝分子链条带结构状态十分相似。
The strip microstructure of carbon layers resembled that of PAN molecular chains in precursor fiber.
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