查询词典 magnetic

In this paper,first of all,we discuss the basic theory of the two dimensions magnetic flux leakage testing,which is the basic of the design of "the monitor system of two dimensions magnetic flux leakage testing equipment for the steel tube ".

在本文中首先讨论了二维漏磁检测法的基本原理，这是"钢管二维漏磁检测设备监控系统"设计的基础。

In the lens driving apparatus of a disk player, a pair of magnets 20 for generating magnetic fields are fixed to a pair of yokes 21, respectively to generate a magnetic gap therebetween.

在盘播放器的透镜驱动装置中，用于产生磁场的一对磁体20被分别固定在一对磁轭21上，用于在其间产生一个磁隙。

Then,we presented an analytical method to solve the dynamic stresses and perturbation of magnetic field vector under thermomagnetic shock,and obtained the response histories and distributions of the dynamic stresses and the response histories of perturbation of magnetic...

提出一种解析方法求解在热磁冲击作用下厚壁圆筒的动应力和磁场矢量扰动，得到柱体内动应力响应历程和分布规律及磁场矢量扰动的响应历程和分布规律。实例计算表明该方法是简单、有效的，并给出了一些有实际意义的结果。

The present invention relates to a method for heuristically starting up DC brushless servo electric machine, including the following steps of (1) after powerup of an increment type photoelectric encoder, electrifying a stator winding two by two with identical time interval to generate six-directional stator winding resultant magnetic fields;(2) detecting six different angles rotated by the rotor within identical tiny time interval by the photoelectric encoder;(3) selecting most positive value rotation angle from the six different angles, and determining maximum torque corresponding to the stator winding resultant magnetic field, and implementing servo startup using the maximum torque as constant starting torque;(4) after the zero-point signal of the photoelectric encoder occurring, switching to servo operation with normal constant torsion.

本发明直流无刷伺服电机试探启动方法，采用如下步骤：(1)增量式光电编码器上电后对定子绕组采用相同的时间间隔两两通电，顺序产生六个方向的定子绕组合成磁场；(2)由增量式光电编码器检测出转子在相同的微小时间间隔内分别转过的六个不同的角度；(3)从转子六个不同的角度中选出最大正值的转角，确定相应定子绕组合成磁场对应的最大转矩，并以该最大转矩为恒定启动转矩进行伺服启动；(4)当增量式光电编码器零点信号出现后，切换为正常恒转矩伺服运行。

The results showed that 50Hz magnetic field at 0.4mT transitorily induced the activation of P38 MAPK at 10 to 15min, while 0.1mT 50Hz magnetic field did not induce the activation of P38 MAPK within 24h.

结果提示CHL细胞经0.4及0.8mT工频磁场辐照处理后，可呈时相性增强SAPK磷酸化，并且均在15min时达到最大值，SAPK磷酸化分别提高20％和17％；同时SAPK激酶活性也相应增强，分别是对照的2.9±0.4和2.1±0.9倍。

Then, the electric properties and magnetic properties of troilite were studied. The study results discover that troilite could be used as a kind of magnetic semiconductor.

对合成出的陨硫铁样品进行了电学和磁学等物理性能的研究，研究结果发现陨硫铁可以成为一种软磁性半导体材料，可望在今后得到应用。

At strong magnetic field of operations and the operation of precision instruments, recommended the use of completely magnetic tweezers.

在强磁场中的作业和精密仪器的操作中建议使用完全磁性的镊子。

The position of bipolar MMFs and the magnetic field distribution of the penumbra provide another support in favor of the uncombed structure of penumbral magnetic fields.

3偶极运动磁特征的出现位置和半影磁场结构分布符合非梳子状黑子半影结构特征。

This became possible by a complete new magnetic system, were the voice coil is underhung and always working in the homogeneous magnetic field.

全新研发的磁体系统，使这一切成为可能。现在，电磁线圈全程工作在同性的磁场中。

In the process of magnetic field analysis,magnetic field method and unequally spaced net finite difference method are used to obtain accurate data.

根据分析计算的结果，对磁流体密封进行了优化设计和实验验证，优化设计出的装置体积和重量降低了 50 %以上。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。