例句與造句

1. Determination of airborne noise emitted by machines by , measurement of structure borne noise ; basic requirements
   機(jī)器空氣噪聲的測(cè)量.結(jié)構(gòu)噪聲的測(cè)量.基本要求
2. It's difficult to find structure borne noise in a sentence. 用structure borne noise造句挺難的