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From 1990 to 2005, CO2 emission intensity per unit of GDP of all developed countries only dropped by 26%, China dropped by 46%.

所有发达国家在1990年至2005年的15年中，单位GDP的二氧化碳排放强度只下降了26%，中国则下降了46%。

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During the first quarter, energy intensity - measured as energy use per unit of output - actually increased, Mr. Zhang said.

在第一个季度中，能量密度——定义为每单位产出消耗的能源——事实上增加了，张先生说。

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Carbon intensity is defined as the amount of greenhouse gases emitted for each unit of nation income.

VOA: standard.2009.11.26

Two of the three workers inside the plant received more than the lethal dose of seven sieverts (a sievert is the unit that measures the intensity of radiation's impact on the body).

ECONOMIST: All over in a flash

In 2006, the first year of the plan, the country's reduction in energy intensity, which measures energy consumption per unit of economic output, was a mere 1.23%.

FORBES: Magazine Article

In 2006 China set a target of a 20% cut by 2010 of its energy intensity (the amount of energy consumed per unit of GDP).

ECONOMIST: Pollution in China