精密

The LY-B series numerical control cutter is the modular structure with high speed, high precision and small size.

LY-B系列数控台式切割机是集高速、精密、小型为一体的模块化结构的切割机。

First, a universal mathematic model for AC servo system is established based on the study of servo drive system of high precision numerical controlled working table, then a method for simplifying the model is proposed.

在对高精密数控工作台的伺服驱动系统研究的基础上，建立了交流进给伺服系统的通用数学模型，并且研究了系统模型降阶简化的方法。

In view of special applications of multi-pole magnetic permanent torque motor used for precise numerical control rotary table, motors with higher torque density and lower torque ripple s are needed.

针对精密数控转台伺服直接驱动用多极永磁力矩电机的特殊应用问题(要求电机有较大的转矩密度且较小的转矩波动)，在分析该种电机的特殊结构的基础上，提出一种新型不等齿顶宽结构，以提高绕组利用系数，加大电机的转矩密度；并采用转子斜极的方法，可在有效消除转矩波动的同时，电机仍保持较高的绕组利用系数。

In view of special applications of multi-pole magnetic permanent torque motor used for precise numerical control rotary table, motors with higher torque density and lower torque ripples are needed.

针对精密数控转台伺服直接驱动用多极永磁力矩电机的特殊应用问题(要求电机有较大的转矩密度且较小的转矩波动)，在分析该种电机的特殊结构的基础上，提出一种新型不等齿顶宽结构，以提高绕组利用系数，加大电机的转矩密度；并采用转子斜极的方法，可在有效消除转矩波动的同时，电机仍保持较高的绕组利用系数。

It is necessary to analyze the effects of orbit uncertainty of the low Earth Orbiter on the observation in GPS occultation for atmosphere monitor.

GPS掩星监测大气方法中需要载有GPS接收机的卫星的精密定轨信息，而该卫星的轨道精度对GPS掩星监测大气的效果进行分析是十分必要的。

Products: Low ohmic precision and power resistors, SMD and conventional technology.

产品包括：低阻值精密电阻和功率电阻，SMD及传统技术产品。

Although not a precision instrument, the ohmmeter is a useful device for rapid measurement of resistance.

欧姆计是一种很有用的仪表，可以用来迅速地测量电阻，尽管它不是一种精密仪表。

In order to use electron beam in brazing of precise structures and thermo-sensitive materials,accommodating every kinds of curve brazing seams,a vacuum electron beam brazing temperature closed loop control system was developed using PID controller,electron beam scanning track editing and on-line adjusting technologies,real-time acquisition and handling of brazing temperature.

为了将电子束应用于精密构件及热敏感性材料钎焊，以适应复杂形状曲线钎焊缝的要求，采用电子束扫描轨迹编辑及在线调节、钎焊温度实时采集及PID控制器构建真空电子束钎焊温度闭环控制系统。

Simulation results show that the proposed control strategy can adapt to the changes of hysteretic characteristics of the GMA under different mechanical loads or input signals, on-line obtain inverse hysteresis model of the GMA, thus eliminate the hysteretic impact and achieve the precision control of the GMA.

仿真结果表明该控制策略能适应GMA滞回特性随机械负载、输入信号的变化，在线建立GMA的滞回逆模型，从而消除滞回非线性的影响，实现GMA的精密控制。

Optical disk is one of the representative products of precision injection molding technology.

光盘是目前精密注塑技术的标志性产品之一。

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％。