例句與造句

1. Whether the backing is a single - shell or a double - shell , the absorption performance approaches more closely to that with a rigid backing
   背襯為單層殼體或雙層殼體時(shí)，從整體上講，吸聲系數(shù)更趨近于剛性背襯而非軟背襯的情況。
2. In the measurement of small sample in an acoustic cylindrical tube , measurement data with rigid backing should be taken as the standard of the performance of an anechoic coating
   在實(shí)驗(yàn)室小樣品聲管測(cè)試中，以較厚的鋼柱作為背襯的測(cè)試數(shù)據(jù)來(lái)衡量吸聲覆蓋層性能更為合適，且易于實(shí)現(xiàn)。
3. It's difficult to find rigid back in a sentence. 用rigid back造句挺難的