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- Ultrasound is sound that has a frequency above the audible range of man that is greater than 20 kHz. In imaging the usual range of frequencies used is between 2 MHz and 10 MHz. 超声是一种声波,在医学影象中,超声仪使用2MHz-10MHz间的声波,此一频率已远远超过人耳所能听到的20khz。
- This approach automatically results in a current frequency twice as high as the chopper frequency so that the ripple of the phase currents is 22 kHz, i.e. it is outside of the audible range. 这种做法的结果会自动在一电流频率高一倍菜刀频率,使纹波的阶段,电流是22千赫,即是以外的发声范围。
- A usually audible discharge of intestinal gas. 屁从肠内排出的(通常有声音的)气体
- It has come within the range of practical politics. 这就属于可实施性政治的范围了。
- We sell a wide range of ales and stouts. 我们出售种类繁多的浓啤酒和黑啤酒。
- "Ultrasonics deals with ultrasonic waves, which have frequencies above the audible range, and their applications in industry and medicine" 超音波声学研究包括超音波之振动(频率高于可听得见的范围)以及工业和医学方面的应用
- Come and see our range of gardening tools. 来瞧瞧我们的成套园艺工具吧。
- It came within my range of vision. 该物体进入了我的视野。
- Communication of audible signals encoded in electromagnetic waves. 无线通讯以电磁波密码进行的可听信号的联络
- Love is sometimes put in range with a career. 人们往往认为爱情和事业是并驾齐驱的。
- Her voice was scarcely audible above the noise of the wind. 在风中她的声音几乎听不见。
- A range of hills rose on their left. 连绵的小山耸立在他们的左侧。
- She is still within range of my gun. 她仍在我枪炮的射程之内。
- Shout as soon as he comes within range. 他一到听得见的距离你就叫。
- Shout as soon as she comes within range. 等她一走到听得见的地方就呼喊。
- The ship came within range of vision. 已经看得见那条船了。
- He shot her at point-blank range. 他在近距离射程内射中了她。
- Airmail revised price list but full range sample within fortnight. 航空寄上订正价格表,全套样品两周内寄出。
- As the procession filed in, comments were audible. 当人们鱼贯而入时就议论开了。
- Their voices were audible to the neighbors. 他们的声音邻居都听得到。