发动机外特性 meaning in Chinese

engine external characteristic

The engine mapping data , vacuum degree and a lot of other data can be gained by engine mapping . this article used these data to analyze the factors that impact on dynamic performance of engine deeply , then drawn a conclusion that the throat area and the shrinking degree of the mixer are the main parameters
通过发动机台架试验，获得发动机外特性和进气真空度等大量的实验数据，在这些实验数据的基础上，对影响汽油cng两用燃料发动机动力性的因素进行了深入地分析，结果表明混合器的入口角度和喉口面积是影响两用燃料发动机动力性的主要参数。