查询词典 power frequency

Comparing with the equation of common machine tools, this equation has three characteristics: It includes the variable frequency driver's energy loss;The variable frequency driver's no-sine voltage wave causes mechanical pulse losses in mechanical driving system;Equivalent palstance of main driving system is of uniform continuity.

该方程相对于普通机床功率平衡方程，具有变频器自身存在较大的能量损耗、变频器输出的非正弦波形电压带来的电气谐波损耗和机械传动系统的机械脉动损耗、主传动系统当量角速度具有一致连续性等三个重要特点。

The measurement method includes adopting two vertically superposed position sensors and one capacitive sensor to measure the time for the liquid drop to pass through, adopting a frequency counter to count frequency and adopting microprocessor to calculate the liquid drop volume.

其方法是采用两个垂直重叠的位置传感器和一个电容传感器，测量液滴下落经过的时间，并由频率记数器对频率记数，而由微处理器计算出液滴体积。

Results:(1) the frequency of menstruation disorder is as high as 49.03 percent, the frequency of dysmenorrhea is up to 90.20 percent.

结果：(1)水上项目女运动员月经不调的发生频率高达49.02%，痛经的发生频率高达90.20%。

The slot was constituted the resonance electrical length of the high-range frequency point, while the feed wasthe low-range frequency point .

以矩形宽槽尺寸为主构成了低频段的等效谐振电长度，而馈电贴片尺寸构成了高频段的等效谐振电长度。

When any of the characteristics of the blood plasma are changed,the electrical resonance frequency of the blood plasma will changed immediately. In the process of blood coagulation, the characteristics of the blood plasma are changed fundamentally. Therefore, it can reflect the process of blood coagulation by measuring the electrical resonance frequency.

实验采用了液体谐振测量装置来测量血浆的电谐振频率，测量系统包括待测溶液，指叉型传感器，振荡电路，SP312等精度频率检测仪，USB数据传输，PC机数据显示以及相应的上位机软件部分组成。

It is consisted of two circuits: the high frequency converter and the electromagnetic switch contact state sensing circuit without any sensor. There are more advantages in this technology than in those dealt with the problems in commercial frequency.

提出了一种互补式开关新技术，它由两个新电路构成，即高频开关变换器与电磁开关触点状态无传感器实时采样电路由于以高频处理方式来解决此类工频电工问题，较传统方法有更多优点，因此具备了解决上述难题的条件。

The characteristics of the MHD structure observed in the soft x-ray tomography are as follows. It is constructed with m=2 mode oscillation, so that the magnetic surface is made up of two islands. The structure of the magnetic surface is relatively stable. It rotates in the direction of the electron dia-magnetic drift, and the rotation frequency is the half of the oscillation frequency of soft x-ray signals.

通过SX反演图象分析，MHD型磁面结构的特点：一是m=2模的振荡构成，因而此磁面始终有两个岛组成；二是磁面结构相当稳定，在MHD放电过程中没有明显变化；三是磁面结构整体沿电子逆磁方向极向旋转，旋转的频率是软X射线测量的信号频率的一半。

Abstrac t : The emissive frequency of the general frequency modulation broadcast transmitter is fixed.

一般的调频广播发射机，发射频率是固定的。

It is showed that the index of the cupula controls the magnitude of the amplitude and phase in low frequency, and the index of the endolymph characterizes the critical frequency of the system.

其中，壶腹嵴的粘弹性指标α主要控制系统在低频段的幅值和相位值，而内淋巴液的粘弹性指标β则主要决定了系统的临界频率和低频截止频率。

First of all, because the teaching the definition of Frequency and Equiprobability models are basic knowledge of Probability, and they lay a solid foundation for the subsequent studying probability, the method of computer imitation trials in the teaching of Frequency has obvious effect, so does the audio-visual models in the teaching of Equiprobability models.

首先，频率定义与古典概型是概率的基础知识，并且为概率的后续学习提供坚实基础，因此它们的教学尤为重要。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。