Exhaust emission of vehicle engines is one of the primary air pollution sources.
车用内燃机的废气排放是大气污染的主要污染源之一。
Conduction emission is an electromagnetic emission transmitted on power or signal lines and a primary form of electromagnetic interference at low frequencies.
传导发射是沿电源线或信号线传输的电磁发射，在低频范围内，传导发射是电磁干扰的主要形式。
This paper described the function of neutron source assembly, the principle of neutron emission, and also described the structure and characteristics for primary and secondary neutron source assembly.
介绍了反应堆堆芯中子源的功能，发射中子的原理以及秦山二期工程一次和二次中子源组件的结构和特点。
By using the acoustic emission technique to monitor the fractures on analogous pressure pipes of the primary circuit, which has had cracks and was loaded with pressure, was investigated.
在力学试验研究中，采用声发射技术对已具有疲劳裂纹的核反应堆一回路模拟压力管进行加载爆破断裂的监测。
This paper derived the formulation for the real efficient emission coefficient of secondary electron under the condition that high energy primary electron incident on metal obliquely.
推导出高能原电子斜入射时的金属的有效真二次电子发射系数的表达式，它与入射角的余弦近似成反比。
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
声发射源与接收讯号传感器间的距离以及环境噪声的电平是选择频带的主要依据。
The author calculated the carbon emission of the primary energy consumption of Henan province from 1978 to 2009.
笔者计算了1978年- 2009年河南省一次能源消耗的碳排放量。
The NOx emission is high along with the great of primary air rate.
一次风率越大，氮氧化物排放量越大。
Compared with conventional gasoline pathway, methanol-gasoline pathway can reduce primary energy consumption by 9% and increase GHGs emission by only 3.5% with the progress of vehicle technology.
若考虑车辆技术的进步，甲醇汽油路线的一次能源消耗可比传统汽油路线降低9%，温室气体排放量仅增加3.5%。
Combined with life cycle assessment principle, the total primary energy consumption and green house gases (GHGs) emission of methanol-gasoline pathway are analyzed.
结合生命周期评价原理，对煤制甲醇与原油制汽油混合而成的甲醇汽油路线的能源消耗与温室气体排放进行生命周期分析。
The primary industry has stronger effect for the CO2 emission reduction than the tertiary industry in the first stage;
对于减排作用，第一阶段是第一产业比第三产业强；
The primary industry has stronger effect for the CO2 emission reduction than the tertiary industry in the first stage;
对于减排作用，第一阶段是第一产业比第三产业强；
应用推荐