The working principle of the system is: DPF filters the particulate matter (PM) in diesel engine exhaust, to make emission up to certain standard.
系统工作原理是：DPF过滤柴油机排气中的颗粒物（PM），从而使排放达到相应的标准。
Serials of standard gas experiment show that the measurement system can fulfill the requirements of the on-line measuring for vehicle exhaust with a proper measurement accuracy and stability.
通过标准气体实验证明了该系统对气体浓度测量的准确性和稳定性，具备实际应用能力。
Serials of standard gas experiment show that the measurement system can fulfill the requirements of the on-line measuring for vehicle exhaust with a proper measurement accuracy and stability.
通过标准气体实验证明了该系统对气体浓度测量的准确性和稳定性，具备实际应用能力。
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