| 单词 | acoustic impedance |
| 例句 | While employed as a research engineer for Bell Telephone Laboratories in Murray Hill, N.J., he helped develop a talking typewriter and wrote papers on room acoustics, sound absorption and acoustic impedance. Cyril Harris Dies at 93; Fine-Tuned Concert Halls 2011-01-09T02:20:26Z Reflections at boundaries between two different media occur because of differences in a characteristic known as the acoustic impedance Z of each substance. College Physics for AP Courses 2015-08-12T00:00:00Z Note that the acoustic impedances for soft tissue do not vary much but that there is a big difference between the acoustic impedance of soft tissue and air and also between soft tissue and bone. College Physics for AP Courses 2015-08-12T00:00:00Z The greater the difference in acoustic impedance between the two media, the greater the reflection and the smaller the transmission. College Physics for AP Courses 2015-08-12T00:00:00Z |
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