本文论述了车用发动机试验台排气系统中的三节扩张式消声坑的设计和试验结果。
In this paper the design and performance of expanding silencing exhaust duct for the test bed of automotive engines are discussed.
设计并安装了专用的齿轮箱试验台，并在台架上进行了模拟发动机与螺旋桨扭振激励状况下的试验。
A special gearbox test device was made to simulate the excitation of the engine and the propeller.
针对亚燃冲压发动机燃烧室内部流动特点，结合二元稳定器试验台高速气流场燃油雾化特性试验，建立试验件三维模型并对其喷雾两相流动进行数值模拟。
Based on experimental investigation of the liquid fuel atomization in high speed airflow and the flow characteristics of ramjet combustion chamber, a three-dimensional model was established.
设计制造了发动机冷却风扇噪声性能测试专用试验台，用于冷却风扇的台架试验。
A specialized noise test bench of automobile cooling fan was designed to carry out the bench test and the outer vehicle acceleration noise test also was conducted.
当需要考察一台航空发动机的高空性能时，可以利用三种型式的设备，即高空风洞、高空试验台和飞行试验台。
When it becomes necessary to examine the altitude performance of an aircraft engine, three types of facilities may be used-altitude wind tunnels, altitude test beds and flying test beds.
当需要考察一台航空发动机的高空性能时，可以利用三种型式的设备，即高空风洞、高空试验台和飞行试验台。
When it becomes necessary to examine the altitude performance of an aircraft engine, three types of facilities may be used-altitude wind tunnels, altitude test beds and flying test beds.
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