例句與用法

1. a study on the surface noise source identification of a diesel engine
   柴油機表面噪聲源識別技術(shù)研究
2. abstract : in the paper, based on the problem that strong reactive background noise can bring about a big measurement error when sound power is measured in a narrow room, such as power room in a diesel locomotive, it is analyzed theoretically that sound power is measured and carried out by using sound intensity probe hood, and sound power of diesel engine surface noise is measured in a power room
   文摘:在狹小空間如內(nèi)燃機車動力室的條件下，測量柴油機表面噪聲聲功率時，動力室內(nèi)抗性背景聲很強引起較大的測量誤差，從理論上分析了采用聲強探頭罩進行聲功率測量的可行性，并進行了內(nèi)燃機車柴油機表面噪聲的聲功率測量。