As more and more cars are produced and used, so the emission from their exhaust-pipes contains an ever larger volume of poisonous gas.
随着越来越多的汽车被制造和使用，这些汽车排气管里的排放物所包含的有毒气体的总量也越来越多。
Given the sheer volume produced-about 3 billion tons per year-it adds up to a staggering greenhouse gas problem.
如果大量生产水泥，大约每年生产30亿吨，其造成的温室气体污染将是惊人的。
The higher the volume fraction of methane, the more the surplus heat is produced at the same flue gas temperature.
在相同排烟温度下，甲烷体积分数越高，盈余热量越多。
The higher the volume fraction of methane, the more the surplus heat is produced at the same flue gas temperature.
在相同排烟温度下，甲烷体积分数越高，盈余热量越多。
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