Scientists have known for decades that male lab mice produce high - frequency sounds - when they pick up the scent of a female mouse 几十年前科学家们就知道，当实验室中的雄性老鼠闻到雌性老鼠的气味时，会发出高频率的声音。
Research shows short , frequent sessions are generally more effective than longer , infrequent sessions , because fatigue and other factors lead to inattention 研究表明短时间、高频率的学习方式比长时间、低频率的学习方式更有效。
In order to get the higher efficiency and small quantitative delivery , warehouse has to be real time controlled for being accurate scheduling 摘要为了实现高频率、小批量的物流配送，必须对立体仓库出库作业进行实时、准确的调度。
Our brain waves however , produce only 8hz . therefore , the body is exposed to up to 20 times higher frequency patterns than it is generally used to 因此我们便暴露于正常的十多倍的高频率层面上，这样的结果就形成个人的神经质、失眠和缺乏集中力。
Modulating a long foil at high frequency and high voltage transmits significant radio frequency energy , which may cause interference with radio communications 装备一个长叶片在一个高频率高电压的传输将引起无线电频率辐射，可能引起无线电交流冲突。
High - frequency ones can get hit too , but interactions with the solid crust of the neutron star stop the resulting precession much more quickly than for low - frequency ones 高频率的进动也可能由撞击产生，不过中子星坚硬的外壳将使这种高频进动很快就停下来。
Impact compaction machine is a pressing machine with high impact energy and it changes vibratory compaction from high frequency low swing to high swing low frequency 摘要冲击压实机是具有高冲击能量的压实机械，它将振动压实的高频率低振幅改为高振幅低频率。
Because each time such an event is raised , another round trip to the server would occur , which would considerably affect response time in the page 之类的高频率事件，因为每次引发此类事件时，都会发生到服务器的另一个往返行程，这将显著影响页面中的响应时间。
Both traditional ultrasound and elastography use echoes from high - frequency sound waes to create pictures of what is going on inside the body , but elastography goes a step further 传统超声及弹性成像均利用高频率声波创建持续于人体中的图像，只是弹性超声更进了一步。
It is often difficult to detect the problem at an early stage because symptoms can be quite subtle at times ; especially if only sounds of high frequencies are lost 初期失听的徵象有时并不明显，大多数患者未必能察觉问题存在因为一般只是听不到某些声音，例如一些高频率的声调。
