限量排放要求所有者每年减少排放一吨二氧化硫。
Each allowance authorizes its holder to emit one ton of SO2 per year.
针对隧道采用“以堵为主，限量排放”的防排水措施后，衬砌外水荷载的计算，以及排水系统排水能力大小对衬砌外水荷载的影响进行了探讨。
In this paper, in case of grouting reinforcement and based on calculation of external water pressure, the effect of drainage volume on the external water pressure on lining is discussed.
到2050年，排放限量将更加严格，公民所负担的将是他们收入的1.2%。
By 2050, when the emissions limit would be much tighter, the burden would rise to 1.2 percent of income.
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