电磁

The overall design of electronic pyrotechnical non-dissipation measurement instru-ment is introduced,and the measures which improve the electromagnetic compatibility of system are brought for-ward in view of EMC question in the system.

介绍了电火工品无损测试仪的总体设计方案，并针对系统的电磁兼容(Electromangnetic Compatibility，简称EMC)问题，提出了提高兼容性的具体措施，包括感应线圈设计、电磁屏蔽、滤波技术、接地设计以及PCB设计。

The main products are as follows, three different step motors of YS series, the YY series electric capacity operates the asynchronous motor, YC (YC2) serial single-phase electric capacities start the asynchronous motor, the YU series resistance starts the asynchronous motor, asynchronous motor of electric capacity of a pair of value of YL series, three different step motors of Y series, three different step motors of Y2 series, YD series change the asynchronous motor of extremely many speeds, YH series are transfered to three different step motors of difference rate high, the YCJ series gear wheel moderates three different step motors, YEJ series electromagnetic to apply the brake three different step motor, YCT series electromagnetic to transfer speed three different step motor , YVP series frequency conversion transfer speed asynchronous motor , YSF series axle flow fan special-purpose three different step motor, Three different step motors of YZU series vibration source , the electronic device of YDF2 series valve uses three different step motors and YOX series limit distance type hydraulic coincidence device , ZLY spatters and makes such 28 series and more than 1500 specifications as the coil post tooth decelerator ,etc..

主要产品有：YS系列三相异步电动机、YY系列电容运转异步电动机、YC（YC2）系列单相电容起动异步电动机、YU系列电阻起动异步电动机、YL系列双值电容异步电动机、Y系列三相异步电动机、Y2系列三相异步电动机、YD系列变极多速异步电动机、YH系列高转差率三相异步电动机、YCJ系列齿轮减速三相异步电动机、YEJ系列电磁制动三相异步电动机、YCT系列电磁调速三相异步电动机、YVP系列变频调速异步电动机、YSF系列轴流风扇专用三相异步电动机、YZU系列振动源三相异步电动机、YDF2系列阀门电动装置用三相异步电动机和YOX系列限距型液力偶合器、ZLY渐开线圈柱齿减速器等28个系列1500多个规格。

Based on analysis of solidified structure of aluminium strip in different laboratorial conditions, the effect of commutating period on grain refinement.

通过对不同试验条件下铝带坯宏观组织的分析，探讨了换相周期对铸轧带坯晶粒细化的影响，试验结果表明：换相周期在电磁快速铸轧工艺中是一个重要的电磁参数，当换相周期数为1，电磁场频率为13Hz时，晶粒细化效果最好。

Experimental studies were conducted to investigate the effects of driving parameters,such as driving voltage and negative demagnetizing pulse,on the dynamic response performance of a three-way solenoid valve in the common-rail fuel injection system.

结果表明：提高驱动电压可以有效地提高三通电磁阀的动态响应性能；在不同驱动电压下，对于同一正向励磁脉冲都有一个最优的反向消磁脉冲，这时三通电磁阀的动态响应特性最好；驱动电压越高，最佳消磁脉冲越小，最佳消磁脉冲变化越缓慢。

Currently, the knowledge of EMC is desiderated to be popularized, the problems of EMC for household electric appliances are desiderated to be solved.

当前，电磁兼容知识亟待普及，家电行业亟待解决家用电器的电磁兼容问题。

The carbon fiber felts were firstly introduced into electromagnetic functional composites in this study.

本研究首次将碳纤维毡引入电磁功能复合材料，对国产聚丙烯腈基、沥青基以及粘胶基碳纤维毡在表面金属电沉积、微波吸收复合材料和电磁屏蔽复合材料等方面的应用做了较为系统的研究。

Whole ballistic electromagnetic environment ; electromagnetic measurement ; storage test ; fuzes

全弹道电磁环境；电磁测量；存储测试；引信

First, To develop the patent of "Direct Driving Type" Presser Foot Lefter . It's going to more sensitive and silent.

电磁直驱式抬压脚组：率先专利开发，电磁直驱式抬压脚组，不产生杂音，反应更为灵敏。

First, To develop the patent of "Direct Driving Type" presser foot lefter. It悯s going to more sensitive and silent.

电磁直驱式抬压脚组：率先专利开发，电磁直驱式抬压脚组不产生噪音，反应更灵敏。

It has been emphatically demonstrated how the forces and moments in every direction of the levitating ring have been calculated from measuring signals. The other parts of the measuring device have been briefly introduced. In chapter 5, according to the symmetrical characteristic of whole model, two similar simplified submodels have been built and described on the coordinate subsystems, and its dynamic state equations have been built.

第二章，总结了电磁悬浮器的基本工作原理，对之及其同类作了结构形式的分类；综述了电磁悬浮器及其同类的发展历史、研究及应用现状，并结合作者本人的研究工作经历，对其本体的结构和设计，进行了分析和选择，对系统中的测量传感器、测量放大器、控制器及功率放大器的特点、设计和实现等，作了述评；提出了本文的研究目标。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。