无回声的英文

• echo free

• 无:    not have; there is not; be w ...
• 回声:    echo; bounce back; reverbera ...
• 无回声池:    anechoic tank
• 无回声的:    anechoic
• 无回声区:    echo free zone; echoless area; no echo area

例句与用法

1. Precision methods for the determination of sound power levels of noise sources in anechoic and hemi - anechoic rooms
   在无回声和半无回声的室内精确测定噪声源声功率级的方法
2. Non infected seromas after surgery are usually anechoic collections . fluid collections complicated by infection or hemorrhage appear more complex , with ariable degrees of internal echoes , layering , and septa ( figure 2 )
   术后未感染的血清肿常为无回声的积液，并发于感染或出血的积液其表现比较复杂，内部回声程度、分层和分隔常不同（图2 ） 。
3. Non infected seromas after surgery are usually anechoic collections . fluid collections complicated by infection or hemorrhage appear more complex , with variable degrees of internal echoes , layering , and septa ( figure 2 )
   术后未感染的血清肿常为无回声的积液，并发于感染或出血的积液其表现比较复杂，内部回声程度、分层和分隔常不同（图2 ） 。