片语

power-frequency carrier工频载波

power-frequency regulation功频调节

power-frequency earthing工频接地

power system frequency电网频率

IF power supply frequency中频电源频率

power source frequency电源频率

power system frequency deviation电力系统频率

Ultrasonic power and frequency超声波功率与频率

power-frequency vibration工频振动

英汉例句

• the power frequency overvoltage of unloaded line because of the capacity effect is studied, and the effect of eliminating power frequency overvoltage using shunt reactors is analyzed.

  讨论了空载线路在电容效应下产生的工频过电压，并对并联电抗器抑制工频过电压的作用进行了理论分析。

• product feature the charger is standard, its core component is power frequency transformer.

  产品特点本充电器为标準充电器，其核心元器件为工频变压器。

• aiming at the shortage of traditional method of measuring power frequency parameters of overhead transmission lines, measurement of power frequency parameters by non power frequency is put forward.

  为了解决输电线路在高感应信号下，準确方便地测量线路的工频参数，针对架空输电线路工频参数传统测量方法的不足，提出了异频法测量线路工频参数。

• conclusion power frequency electromagnetic field may have no effects on androgen expression in 500 kv substation male workers.

  结论在长期接触工频电磁场的职业人群中未观察到血清雄激素水平与工频电磁场的相关性。

• the dynamic power frequency impedance of tcsc is of great importance to the analysis of protective relaying characteristics on transmission line with tcsc.

  tcsc的动态基频阻抗特性分析对研究含tcsc线路上的线路保护的特性具有重要意义。

• mathematical model of governing system's dynamic characteristic for condensing turbine, reheat turbine, extraction turbine and power frequency turbine are introduced in this paper.

  介绍了研究凝汽式汽轮机调节系统、中间再热式汽轮机调节系统、调整抽汽式汽轮机调节系统及功频电液调节系统的动态特性的数学模型。

• the parallel gap lightning protection device on 35kv overhead transmission lines can prevent insulators and conductors from being burned by power frequency arc caused by lightning stroke.

  在架空输电线路上安装并联间隙防雷装置，能够在线路遭遇雷击或绝缘子串工频闪络时有效地保护绝缘子串免受工频电弧的灼烧。

• the principle of arc-suppression coil with three phases and five columns , and theory of power frequency extinguishing arcing were introduced.

  介绍了三相五柱式消弧线圈的工作原理，单相电弧接地过电压的工频熄弧理论。

• the results indicate that with increasing of discharge and power frequency degradation efficiency of pcp on ac increases.

  结果表明：增加放电电压和电源频率可以提高pcp的降解率；

• it is desirable to get rid of a short circuit as promptly as possible, now breakers can interrupt short circuit currents within two cycles (on power frequency basis).

  对于短路需尽快地摆脱，现在，断路器可在两个周波（对于工频）内开断短路电流。

• the results show that power frequency over-voltage does have relationships with the operation mode to a great extent, and different operation modes may cause distinct values of over-voltage.

  研究和计算都表明，工频过电压幅值很大程度上决定于系统的运行方式，若系统运行方式不同，过电压可能会有很大差异。

• in this paper, a novel approach to removing power frequency interference from biomedical signals based on independent component analysis (ica) is studied.

  论文则提出了用独立分量分析（ica）进行生物医学信号中工频干扰消除的新方法。

• from transformation result, impulse current is similar to power frequency current, so impulse grounding resistance is measured by the method measuring power frequency grounding resistance.

  转化结果表明，沖击电流与工频电流类似，沖击接地电阻可按类似工频接地阻抗测量的方法测量；

• for shanghai power grid, which has large short circuit capacity and short electrical distance, a method using imported instrument to test power frequency variation distance protection is presented.

  结合上海电网具有短路容量大、电气距离短的特点，提出了使用进口仪器测试工频变化量距离保护的具体方法。

• the discharging properties of air gap in natural ambience with different conditions under power frequency voltage and lightning impulse voltage are studied.

  通过对该避雷器进行大量的雷电沖击放电试验，确定了间隙距离和安装位置。

• the power frequency voltage withstand test and the simulated brushing test show that the robot has great insulating ability and good application prospects.

  工频耐压试验和模拟带电清扫试验表明，关节式带电清扫机器人有良好的绝缘性能，并具备了明朗的应用前景。

• finally, the paper makes comparison and choice of the evaluating standard of the power frequency electric field, and brings forward more objective standard.

  最后，本文对工频电场的评估标準进行了比较与选择，并提出了较为客观的依据标準。

• the test results in this paper show that zno arrestor unit with a series gap for transmission lines is able to cut off power frequency current quickly before the circuit breaker operate.

  试验研究证实：氧化锌限流元件串联放电间隙能够在断路器动作之前，快速截断工频续流。

• a power main circuit is composed of a power frequency rectified unit, an inversion unit and a high frequency rectified unit, and a control unit is connected with the inversion unit.

  其结构是由工频整流单元、逆变单元和高频整流单元相接构成电源主回路，控制单元接逆变单元；

• the electric parameters such as inductor current, power frequency and energy consumption etc.

  计算出铝合金扁锭的感应器电流、电源频率、功率和能耗等电参数；

• in addition, an adjustable resistor is connected in series in the series loop of the sensing unit and the inclusive unit to realize the fine regulation to the power frequency impedance.

  此外在所述感性单元和容性单元的串 联回路中串入一可调电阻，实现对工作频率阻抗的精细调整。

• as wavelet module maxima occur at peaks of signal, the pretreatment removes power frequency periodic components from electric signal and thus avoids misjudgments of fault.

  通过预处理滤除工频周期分量，消除了小波变换在信号峰值处的模极大值，从而避免了对故障的误判。

• the discharging curves for power frequency voltage and lightning impulse voltage are measured and its fluctuation range caused by variation of air condition is found.

  该式能把工频电压和雷电沖击电压下空气隙的放电曲线箍在特定的范围内。

• a new structure of linear auto tracking wave trap for power frequency is introduced.

  介绍了三偏心蝶阀自动跟蹤等离子喷焊设备。