查询词典 alternating current

The new approach to measure the internal resistance of batteries by using alternating current four probe method based on the optimum relational grade of capacity and resistance of the batteries is proposed in this paper.

本文提出的基于蓄电池容量与阻抗最佳关联度的交流四端法是测量蓄电池内阻的新方法，能够克服常用四端法在蓄电池满容或接近满容时检测困难的缺陷，做到了蓄电池内阻的实时在线检测，为直流系统检修模式由计划检修向状态维修转变做出了有益的探索。

Thermal characteristic of hot plate in alternating current electric heater is studied,the heat transfer model is built and is solved by numerical method to find out the relationship between temperature and time.

研究了以交流电为电源的加热板电热器的加热热行为，建立了传热模型，用数值方法求得温度随时间的变化关系。

Also, we select the signal collecting circuit of three output polars, the coupling circuit using capacitance and resistance, the alternating amplify processing circuit, the positive feedback retardation comparsion, the driving circuit of output current and the stabilization voltage supply circuit.

选择了InSb磁阻三端输出型信号采集电路，阻容耦合型交流放大电路，正反馈迟滞型电压比较器和大电流推挽驱动电路及稳压电源电路。

The power of Electric Super Low-Volume Sprayer is alternating current of 220 volt.

电动超低容量喷雾器使用220V交流电，高频、高速、电机旋转带动风叶产生高速气流，将药液送到喷管与产生的高速气流会合，将药液雾化成极小的微粒。

Impedance is a measurement of the resistance of the cable to alternating current and is measured in ohms.

阻抗是缆线对交流电阻力的量测，测量以欧姆为单位。

The specimen is placed in a space with nulled field (such as produced with Helmholz coils) and then subjected to an alternating magnetic field which is then reduced gradually to zero by decreasing the current of the field coil or by pulling the specimen from the coil.

样品放置在一个零磁场(如亥姆霍兹线圈产生的场)作用空间内，然后作用以交变磁场，该交变磁场通过减少激励线圈或将样品从线圈中逐渐抽出使得场强逐渐减小至零。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than that in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

It is considered that fatigue crack is early produced on drill pipes, because the vibration load of drilling tools in air drilling is more severe than in mud drilling. Fatigue cracks easily occur under alternating vibration. Because the current wellhead detecting instruments can not be used to reflect the change of pump pressure produced after drill pipe piercement timely and accurately, effective measures can not be taken in time to prevent the expansion of fatigue cracks. As a result, drill pipe fracture accidents occur.

失效分析表明，钻杆属于早期疲劳断裂，断裂主要原因是在空气钻井过程中钻具受到的震动载荷远大于钻井液钻井过程中的震动载荷，在交变的震动载荷作用下，钻具容易产生疲劳裂纹；由于现有的井口检测仪表不能精确及时反映钻杆刺穿之后产生的泵压变化，无法及时采取预防措施，疲劳裂纹不断扩展，最终导致了钻杆断裂失效。

A phase-error corrector adjusts the phase of the oscillator signals in response to a variation in the magnitude of an alternating current component in the quadrature mixer output signal (MO2a).

相位误差校正器向应于正交混频输出信号(MO2a)中的交流分量的幅值变化来调整振荡信号的相位。

Porous alumina templates with different apertures were fabricated by changing the oxidation voltage in two-step anodic oxidation, and then Cu nanowires were synthesized in porous alumina by the alternating current electrochemical deposition method. The Cu/PAA was analyzed by SEM and XRD, the results have shown that Cu nanowires were indeed synthesized in porous alumina which had the same diameter and good structure of wire grating.

通过改变二次氧化过程中的氧化电压，制备了不同孔径的多孔Al模板；采用交流电沉积的方法，制备了含Cu阳极PAA膜。X射线衍射分析表明，阳极PAA膜上确有Cu生成；扫描电镜显示，Cu纳米线粗细均匀，具有很好的线栅结构。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。