可有开关控制

A new method of multi and step_speed change by using PLC controlled switching model converter was introduced,it was developed to update the technology in doffer drive system of A186D high_speed carding machine.

介绍了一种采用PLC的开关量输入、输出模块控制变频器进行多级有级调速的方式，该技术可用于A186D型高速梳棉机道夫传动系统的技术改造，获得了较高的性价比与经济效益。

In this paper, dry-type transformers 10kV-circuit the development of a load voltage change-over switch, which uses advanced power electronics and opto-mechatronics technology, with the non-excitation voltage regulating transformer is converted to on-load tap changer functions, solve of the non-excitation voltage transformer without power interruption can not adjust voltage, voltage regulator is not convenient, and the shortcomings in time, and have the best communication interface

本文针对10kV 无励磁干式变压器研制一种有载调压转换开关，它采用先进的电力电子技术和光机电一体化技术，具有把无励磁调压变压器转换为有载调压变压器的功能，彻底解决了无励磁调压变压器不停电不能调整电压、调压不方便和调压不及时的弊病，并具备完善的通信接口，可方便地嵌入配电系统的电压无功控制和电力监控中，提高了变压器供电系统的自动化水平。

An optical cross-connect, comprises at least one controllable switch module and a distribution frame, which may be monitored by means of a network management system, the external and internal optical distributor inputs and outputs of which (ir1 to irn, er1 to ern) may be connected within the distribution frame, by means of several optical connection paths.

要约 光学的交叉连接器有至少一个可控制的开关模块和经过网络管理系统可监控的一个分配器框架，其外部和内部的光学分配器输入端和分配器输出端(ir1至irn，er1至ern)在分配器框架内经过多个光学的连接导线是可以连接的。

Underneath the center display are two movable climate control vents, the emergency flasher switch and a passenger-airbag off light.

该中心的显示下方有两个可移动的气候控制系统的通风口，紧急闪光器开关和一个乘客过轻安全气囊。

Each thermantidote have the function of regulating independently,the temperature of each room can be controlled alone,and the independent fresh air can be sent into air condition room systematically.

同时各末端装置有独立的开关和调节功能，各房间的温度可独自调节与控制，且防止了空气的交叉感染。

Sennheiser PC 160 also features large surrounding ear caps with velour ear pads for optimal comfortibility, adjustable, bendable and pivotable noise cancelling microphone, in-line volume control and microphone mute switch, extra thick single-sided cable and headband adjustable on both sides.

森海塞尔的PC 160还配备有大耳朵周围的警帽与丝绒耳港口及机场发展策略为最优comfortibility ，可调，弯曲和pivotable噪音取消麦克风，在网上音量控制和麦克风静音开关，额外的厚单面电缆和头带可调双方的。

Based on the application of transistor temperature control box for electrolytic aluminium foundery blending holding furnace in Baotou Aluminium Industry Group Co.

本文通过晶闸管温控柜在包头铝业集团公司电解铝铸造混合保温炉中的应用，说明现行交流接触器的平凡通断控制炉温方式有很多缺点，而使用无触点开关的晶闸管控制温度，即可节约电能又可节约加热元件硅碳棒，取得的经济效益是非常可观的。

Power Station where the main products are: the former pool water level monitor, oil mixing with water signal devices, oil mixing with water monitor, two two-FirstCall / 2 three / two four-way double-acting self-sustaining valve, speed monitoring devices, bearings oil level signal devices, flow, head efficiency monitoring device, the displacement angle of transmission controllers, intelligent two-way transfer of water supply valves, intelligent pressure transmission controllers, automatic self-cleaning water filters, small-caliber recoil-type filter, guided Leaf position switch, automatic qi device, float liquid level controller, temperature indicator, water level monitor, solenoid valve, electric butterfly valve, magnetic flap level gauge, linear displacement transducer, temperature data logging devices, shear sell-off signal devices, vibration, degree of monitoring devices placed, programmable speed monitoring devices, gate opening apparatus such as hundreds of professional instrumentation and automatic control device!........

其中电站主要产品有：前池水位监测仪、油混水信号器、油混水监测仪、二位二通/二位三通/二位四通双动自保持球阀、转速监测装置、轴承油位信号器、流量水头效率监测装置、位移角度变送控制器、智能双向供水转阀、智能压力变送控制器、全自动自清式滤水器、小口径反冲式滤水器、导叶位置开关、自动补气装置、浮球液位控制器、温度显示仪、水位监测仪、电磁阀、电动蝶阀、磁翻板液位计、直线位移变送器、温度巡检仪、剪断销信号装置、振动摆度监测装置、可编程转速监测装置、闸门开度仪等上百种专业仪表与自动控制装置！。。。。。。。。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。