Through the orthogonal experiments, the author found out the major factor affecting the combustion and thermal characteristics from the gas pressure, water flow, air-inlet area and fume-exhaust area.

本论文通过正交实验从燃气压力、水流量、进风口面积和排烟口面积这四个因素中找出了影响强制平衡式燃气热水器的燃烧和热工特性的主要因素。

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It USES a fast actuated nozzle to follow the exhaust pulse, reducing the turbine inlet area periodically to increase exhaust-gas pressure.

涡流增压器采用了一个快速响应喷头来跟踪尾气脉冲，减少内燃机的进气周期，从而增加尾气排放压力。

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The upper supply and bottom exhaust air distribution is formed in painting polluting area with local plenum chamber and slot outlets.

利用局部静压箱和条缝型百叶排风口在污染控制区形成上送风下排风的气流组织形式。

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And because of its location in a basin, pollution in the Los Angeles area caused by diesel exhaust, barges, locomotives and other sources tends to stay put, says Janice Nolen, assistant vice president with National Policy and Advocacy for the American Lung Association.

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In the kitchen of each wife's area there was a similar improvised exhaust system made from sheet metal to expel kitchen smells.

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