Is the operation of the vapor emission control system satisfactory?

蒸汽释放控制系统操作情况是否满足？

Finally, the effects on the emission control of di diesel engine are discussed.

讨论调整喷油始点对控制直喷式柴油机排放性能的影响。

Members of the Committee manufacture products related to vehicle emission control.

其成员主要是生产车辆排放控制相关产品的企业。

This article introduces briefly the motor vehicle emission control in Bangkok, Thailand.

本文对泰国尤其是曼谷的机动车排放控制管理做了简要介绍。

Emission control systems take longer to warm up and become fully operational in cold weather.

冷天时，排放控制系统需要花费较长时间预热，才能全效工作。