对口占吨酮类化合物的主要合成方法及重要生理活性进行了综述。参考文献3 6篇。
The research progress on synthesis and physiological activities of xanthones was reviewed with 36 references.
海湾国家的排放量占全球2.3%(约合折合二氧化碳当量8.94亿吨)。
Gulf states account for 2.3% of global emissions (894mt of CO2 equivalent).
非洲联盟的排放量占全球8.1%(约合折合二氧化碳当量31.64亿吨)。
The AU accounts for 8.1% of global emissions (3, 164mt of CO2 equivalent).
自1990年以来，巴西大豆产量从不到15万吨增长到60多万吨，占世界大豆出口总量的三分之一，仅次于美国。
Since 1990 its soyabean output has risen from barely 15m tonnes to over 60m. Brazil accounts for about a third of world soyabean exports, second only to America.
印度每年进口700 - 800吨黄金，占全球总需求的20%。
India usually imports between 700 and 800 tonnes of the metal every year and accounts for about 20 per cent of global demand.
在这一总量中，热带虾类拖网渔业的“抛弃”率最高，达到180万吨，占废弃物的27%。
Of that total, tropical shrimp trawl fisheries have the highest "discard" rate, accounting for 27 percent of the waste — 1.8 million tonnes of it.
一般来讲，每年被这样抛弃的数量占全部渔获量的8%，即略多于700万吨。
Generally, eight percent of all fish caught -- just over 7 million tons -- are discarded this way each year, FAO estimates.
印度煤炭公司占国内生产总量的比例超过80%，并控制着180亿吨煤炭存量，这占印度煤炭总量的大部分。
Coal India accounts for more than 80% of domestic production and controls 18 billion tonnes of reserves, most of India's proven total.
39家企业中仅仅只有去年产量共计达12万吨占印尼锡产量半壁江山的Timah公司和Koba Tin公司能够符合上述标准。
Only two of the country's 39 operators, Timah and Koba Tin are expected to be able to comply. Together they account for just over half the country's output, which last year amounted to 120,000 tonnes.
据联合国粮农组织统计，西非国家自2005年起可可年产量约137万吨，占全球总产量的三分之一。
The West African country produces more than a third of the world's cocoa-some 1.37m tonnes per year since 2005, according to the UN Food and Agriculture Organisation.
海湾国家的排放量占全球0.6%(约合折合二氧化碳当量2.46亿吨)。
The small island states account for 0.6% of global GHG emissions (246mt of CO2 equivalent).
2006年，中国13亿人排放了56亿吨二氧化碳，占全球排放总量的20%，而发达国家不到10亿人，却排放了约129亿吨，占全球排放总量的46%。
In 2006, 1.3 billion Chinese people emit 5.6 billion tons of CO2, accounting for 20% of the world's total.
其中欧洲渔民允许捕获量为367000吨（英国占其中的14000吨）而挪威的数量限定在115000吨。
EU fishermen are allowed 367, 000 tonnes (of which Britain accounts for 174, 000 tonnes) and Norway’s 115, 000 tonnes.
从项目的年均减排量来看，中国每年可以产生6477万吨二氧化碳当量，占全球总额的44%。
From the project with an annual reduction to see, each year China can produce 6477 tons of carbon dioxide equivalent, accounting for 44 per cent of the world total.
中国将在2003年消耗257万吨粗钢(占全世界总额的四分之一)，但是仅仅产出220万吨钢。
China will consume 257m tonnes of crude steel in 2003-a quarter of the world total-but produce only about 220m.
年内，塘鱼总产量为2550公吨，占本地淡水鱼消耗量的6%。
Pond fish culture yielded 2550 tonnes, or 6 per cent, of freshwater fish for local consumption.
本文综述了我国年可获得生物质资源量达到3.14亿吨煤当量，其中秸秆和薪材分别占54%和36%；
The annual available biomass resource is 3.14 hundred million tce, 54% of which is straw and 36% of which is firewood in China.
去年，中国粮食进口量为2280万吨，占全球粮食进口总量的7%。
Last year, China imported 22.8 million tons, roughly 7% of total global grain imports.
而干散货运输又是海运的重要组成部分，2004年干散货运量已经突破20亿吨，占世界海运量的30%以上。
The main part of sea transportation is the transportation of dry and bulk cargos, whose volume in 2004 exceeded 2 billion tons, accounting for 30% world seaborne trade volume.
例如，欧洲玉米螟每年毁掉4000万吨玉米，占世界玉米总产量的7%。
The European corn borer, for example, destroys 40 million tons of the world's corn crop annually, about 7% of the total.
据中国媒体报道，广州市1,000万居民每天产生垃圾1.2万吨，占整个广东省的三分之一以上。
According to Chinese media reports, Guangzhou's 10 million residents chuck out 12,000 tons of garbage a day - more than a third of the total for all of Guangdong province.
年生产氨基酸能力600吨，目前出口占50%以上，产品主要销往美国、欧洲和日本等地。
The production capacity is 600 tons per year and over 50% is exported to USA, Europe and Japan.
美国作出了最大的比例占总排放量的，在24.3 %，共5872278成千上万吨，每年碳排放量。
The us made up the largest percentage of total emissions, at 24.3%, totalling 5,872,278 thousands of metric tons of annual carbon emissions.
美国作出了最大的比例占总排放量的，在24.3 %，共5872278成千上万吨，每年碳排放量。
The us made up the largest percentage of total emissions, at 24.3%, totalling 5,872,278 thousands of metric tons of annual carbon emissions.
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