Economics is precise about the tax that should, in principle, be levied to deal with negative externalities: the tax on a liter of fuel should be equal to the harm caused by using a liter of fuel.
从经济学的角度来看，为了应对负外部性，原则上应该征收的税收是准确的：对一升燃料征收的税应该等于使用一升燃料所造成的危害。
The total cost of implementing such a nationwide network in Israel is equal to less than seven days of fuel use by current petrol-engine cars in the country.
在以色列实施这一全国性网络的总成本差不多还低于现在以色列全国7天的总汽车油费。
Fuel efficiency equal to or better than four-strokes.
等于或优于四冲程燃油效率。
World production of biofuels, which are derived from agricultural commodities such as corn and sugar, was equal to 1 per cent of all road transport fuel in 2005.
生物燃料是从玉米和蔗糖等农业大宗商品中提取出来的。2005年，全球生物燃料产量相当于全部燃料的1%。
The hydrogen gas is delivered as a reactant to the fuel cell from the ballast vessel at a pressure greater than or equal to the operating pressure of the fuel cell.
氢气作为反应物以大于或等于燃料电池的操作压力的压力从压载容器输送到燃料电池。
A porous film for use as an electrolyte film in fuel cells. In the film, mechanical properties in the lengthwise direction are equal to those in the width direction.
本发明获得一种燃料电池电解质膜用多孔膜，其具有在纵向和横向方向上相等的机械特性。
Trees absorb CO2 from the atmosphere as they grow, roughly equal to that they release when burnt. Wood is thus considered a renewable, carbon neutral fuel, if from managed sources.
当树木生长时它们吸收二氧化碳，而当它们燃烧时它们会释放大概等量的二氧化碳，也因此如果控制合理的话，木材被认为是一种可再生的中性碳燃料。
Trees absorb CO2 from the atmosphere as they grow, roughly equal to that they release when burnt. Wood is thus considered a renewable, carbon neutral fuel, if from managed sources.
当树木生长时它们吸收二氧化碳，而当它们燃烧时它们会释放大概等量的二氧化碳，也因此如果控制合理的话，木材被认为是一种可再生的中性碳燃料。
应用推荐