main exhaust meaning in English

主机排气
主排气管

2 each main exhaust pipe shall have one exhaust fan
一个风机控制一个主要的排气管道。
Failure analysis to 6l48 60 marine main exhaust valve spindle
船用柴油机排气阀的断裂失效分析
This paper was detailed to introduce the measurement of main exhaust composition from marine diesel engine . at the same time , this paper discusses the computational method to get exhaust mass flow rate by carbon balance method and carbon / oxygen balance method
本文详细介绍了船用柴油机排气中各主要成分的测量方法，同时讨论了用碳平衡和碳氧平衡法计算排气质量流量的过程并编写了相关的计算程序。
The author analyzes the change rules of fuel consumption and the mass of the main exhaust emission pollutants ( nox , pm , co , hc and carbon ) with the operating parameters ( speed and load ) , points out that nox and pm are the primary exhaust emission pollutants which affect the turbocharge - intercooled diesel engine to reach the requires of emission regulations , and map the figure of compositive exhaust emission characteristic
分析了有效燃油消耗率及各主要排放污染物( nox 、 pm 、 co 、 hc 、碳烟)的排放量随运转参数(转速n与平均有效压力p _ ( me ) )的变化规律。指出nox与pm是影响增压中冷柴油机排放达标的主要排放污染物，并绘制了排放综合特性图。这为该类型柴油机的性能分析提供了参考。