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human ear detection 人耳检测
They can hear sounds ten times fainter than the human ear can even detect. 它们可以看到老远处的东西，然而近在它们眼前咫尺的东西却看不到。
The noise is barely detectable by the human ear. 人的耳朵几乎是察觉不到这种噪音的。
The whistle was inaudible to the human ear. 这种啸声人耳听不到。
The human ear is an example of a transducer. 人耳是一种典型的传感器。
There is a remarkably wide range of frequencies and sound pressure levels over which the human ear can detect. 人类耳朵对声音频率和声压级的感应范围很广。
Her trained ear detected the weaknesses. 她训练有素的耳朵听出了这些弱点。
The sound is virtually undetectable to the human ear. 这声音实际上是人耳难以听得到的。
Measured in decibels,noise intensity can range from zero,the quietest sound the human ear can detect,to over 160 decibels. 按分贝计算，噪音强度可以从零(人耳所能感到的最低声音)到160分贝以上。
Ultrasonic sounds are such as are inaudible to the human ear. 超声的声音是人类的耳朵听不到的那种声音。
Measured in decibels6, noise intensity can range from zero, the quietest sound the human ear can detect, to over 160 decibels. 按分贝计算，噪音强度可以从零(人耳所能感到的最低声音)到160分贝以上。
Measured in decibels, noise intensity can range from zero, the quietest sound the human ear can detect, to over 160 decibels. 按分贝计算，噪音强度可以从零（人耳所能感到的最低声音）到160分贝以上。
The music becomes as loud and penetrating as the human ear could stand. 音乐变成像人类的耳朵一样大声的和敏锐可以站着。
The Bonn scientists have developed laser-driven microphones that pick up sounds inaccessible to the human ear. 波恩的科学家已经研制出一种由激光驱动的麦克风，这种麦克风能探听到人耳听不到的声音。
In physics, sound is considered to be the waves of vibratory motion, nether or not they are heard by the human ear. 参考译文：在美国，最早的路是在殖民地时候铺的。一开始用木材，后来根据地区不同用鹅卵石或砖块。
Of or relating to acoustic frequencies above the range audible to the human ear, or above approximately20, 000 hertz. 超过人耳能听到的范围或超过大约20，000赫兹的，与超过人耳能听到的范围或超过大约20，000赫兹的声音频率有关的
Italian anatomist. A founder of modern anatomy, he is noted for his descriptions of the human ear and heart. 埃乌斯塔乔，巴托洛米奥1520－1574意大利解剖学家，现代解剖学的创始人，以其对人耳和心脏的描述而著称
An ultrasonic signal that’s undetectable to the human ear will scare off the varmint from up to 65 feet away. 一个人耳不能察觉的超声波信号会吓跑65多英尺以外的淘气动物。
The present finite element model is shown to be reasonable in predicting the ossicular mechanics of human ear. 研究结果表明本文建立的人耳三维有限元模型对研究听骨链声学力学特性是有效的。
First, consider a single-frequency electrical sine wave, whose frequency can be detected by the human ear. 首先，考虑单一频率的电气正弦波，它的频率可被人耳朵查觉到。