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- Keywords classification of sandstone and pebble;fluidic element;simultaneous casing and coring drill of efflux and impact;method testing percussive frequency;switching; 砂砾石分类;射流元件;射流式跟管取芯钻具;测频法;切换;
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Percussive frequency 冲击频率
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- Now let me auscultate and percuss you. 现在让我用听诊器听一听和在你身上敲几下。
- Percuss shoulders and upper back on both sides. 叩击肩胛部和两侧上背部。
- Brilliantly sharp,as in percussive sound. 尖利的，如打击乐声
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- A rapid succession of short percussive sounds. 嘎嘎声快速的，连续不断的短促敲击的声音
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- Brilliantly sharp, as in percussive sound. 尖利的，如打击乐声
- He tuned his radio to the police frequency. 他把无线电调到警方的频率。
- To make or emit a quick succession of short percussive sounds. 发嘎嘎声产生或发出快速、持续不断的简短敲击声
- He manipulated the frequency dial of the radio. 他开始调拨频率键盘。
- After a percussive instant the glade was quiet again. 片刻之后，这片林间的空地又沉入了寂静之中。
- The pitch depends on the frequency. 音调的高低是由频率决定的。
- The resulting frequency varies by a few percent. 最终频率有少许变动。
- I am majored in audio frequency amplifier. 我主修音频放大器。
- Small dissipation factor at high frequency. 高的频率和小的损耗因素.
