low-frequency head 低频部件
low-frequency recording and reproducing head 低频记录重放磁头
If you stare at one quadrant, your visual cortex will emit a corresponding frequency, which is detected by an electrode cap covering your head.
当你注视某块屏幕时，你头上所带的电极帽将会监测到你大脑视皮层所发出的那个相对应的频率。
Frequency power head, adjusting speed arbitrary, wide speed range.
变频动力头，转速任意调节，作用范围广。
Simulation results were presented for the flow rate versus frequency, pressure head and input power.
得到了微型泵的频率特性，流量-压头曲线及流量随功率的变化。
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