It is possible for the feed system to have a low impedance, looking downstream from the pressure source at a certain frequency.
在压力源下游，供应系统在某一频率下可能有一低的阻抗。
If a coil offers a large opposition to the current flowing through it at a certain frequency, it is said to have large inductance.
如果一个线圈在一定的频率下对电流的阻力较大，那它的感应系数便大。
So, if you have recombination at a certain frequency, I can say exactly how much that helps or hurts the fitness of the population.
因此，如果你获得一定水平的重组率，我可以准确得出它在多大程度上促进或损害人口的适应性。
An Earth station beams a signal up to the satellite at a certain frequency, and the craft bounces it back down to another, predefined Earth station.
地面基站先用特定频率向卫星发送数据，然后卫星再将把这些数据转发给其它预先确定的地面基站。
The voltage force at a certain frequency, which is generated from a high frequency pulse power supply, is enforced to the two electrodes of the vacuum stove.
这就需要一个高频脉冲电源对真空炉的两个电极施加一定频率的电压场。
The stator of motor adopts centralized winding and its rotor applies permanent magnet material. The constant speed can be achieved at a certain frequency of power supply.
该系列电机的定子采用集中式绕组，转子采用永磁材料加工，电机可根据电源的频率要求，输出恒定的转速。
Features: temperature coefficient of capacitance at a certain temperature range is small and similar to polycarbonate. Low loss at high frequency. Small size. light weight. High insulation.
特点：在一定温度范围内电容量温度系数小，接近于聚碳酸脂介质，高频损耗小，体积小，重量轻，绝缘电。
For RF PA, always require it can output a certain power within a range of frequency, at the same time meeting the system nonlinear requirements and have high conversion efficiency.
射频功率放大器总是要求在一定频率范围内输出一定的功率，同时满足系统的线性度和高效率要求。
The increase of discharge frequency and decrease of cooling-water temperature at a certain extent also favored the improvement of O2 conversion, H2O2 yield and energy efficiency.
适当降低冷却水温度，增加放电频率也可提高合成过程中的氧转化率、H2O2收率及合成H2O2能量效率。
And first law efficiency of testing result also shows a maximum value for certain evaporating pressure. The reason is the gas-liquid two-phase at the expander inlet under high pump frequency.
循环第一定律效率随着蒸发压力的增加也存在最大值，其原因是由于较高压力和流量下膨胀机入口存在汽液两相现象。
And first law efficiency of testing result also shows a maximum value for certain evaporating pressure. The reason is the gas-liquid two-phase at the expander inlet under high pump frequency.
循环第一定律效率随着蒸发压力的增加也存在最大值，其原因是由于较高压力和流量下膨胀机入口存在汽液两相现象。
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