查询词典 three-way switch

With its dual capsule design and unique three-pattern switch (cardioid, cardioid with -10dB pad and omni), the Snowball can handle everything from soft vocals to the loudest garage band and it's ideal for podcasting.

它独特的双话筒头设计和三种指向性切换设计（心形，带-10dB衰减的心形和全指向），Snowball适用于从轻柔的人声到激烈的乐队。

Over the past three years the company has invested substantial funds and scientific talent, committed to an intelligent lighting system, which lasted three years, capturing the smart switch "single access point the fire difficult, does not apply to energy-saving lamps, fluorescent lamps, switches itself Zhigong consumption, and higher temperature rise of a series of difficult questions and break the "energy-saving lamps can not single-fire switch dimming myth.

近三年来公司又投入了大量的资金和科研人才，致力于照明智能化的系统研究，历时三年，攻克了智能开关"单火取点难，不适用于节能灯、日光灯，开关本身功耗大、温升高等一系列老大难问题，打破了"节能灯单火开关根本不能调光的神话。

The main products include: thermostat, electric valves, electric control valve, pressure control valves, variable air volume control box, three-speed switch, valve, heating valve, hoses and so on.

生产产品主要包括：温控器、电动阀、电动调节阀、压差控制阀、变风量控制箱、三速开关、风阀、暖气温控阀、软管等等。

Founded in 2003, the company's main products are: central air-conditioning temperature control, heating room temperature, three-speed switch, fan-coil electric valves, electrical control valve, electric butterfly valve, temperature sensors, pressure controllers, Pressure switches, pressure transmitter, flow switches, antifreeze switch, air valve actuator, the ratio integral temperature control, etc.

公司成立于2003年，公司主营产品有：中央空调温控器、采暖房间温控器、三速开关、风机盘管电动阀、电动调节阀、电动蝶阀、温度传感器、压差控制器、压差开关、压力变送器、水流开关、防冻开关、风阀执行器、比例积分温控器等。

T present, Gaupu Corporation's main products include: thermostat for central air conditioning, thermostat for heat supply and heating, motorized valve for three-speed switch fan coil, electric control valve, electric butterfly valve, temperature sensor, humidity sensor, differential pressure controller, differential pressure switch, pressure transmitter, water flow switch, antifreezing switch, air valve performer, direct digital controller and integration software etc.

北京高标自控设备有限公司目前公司主要产品有：中央空调温控器、供热采暖温控器、三速开关风机盘管电动阀、电动调节阀、电动蝶阀、温度传感器、湿度传感器、压差控制器、压差开关、压力变送器、水流开关、防冻开关、风阀执行器、DDC直接数字控制器、上位集成软件等。

The campus network is an important part of the construction of university modernization and its security issues is also intimidatory by various problems. This article is for the campus network security features of the discussion based on a three layer switch embedded virus defense and information monitoring system, which researches the technical problems based on the embedded virus defense and information monitoring system, and provide the solutions and development based on the existing technologies.

高校校园网络是高校现代化建设中重要的组成部分，同样，其安全问题也受到各个方面的威胁，本文结合高校网络建设过程中校园网络的安全特点，对于基于三层交换机的校园网络防御体系进行了探讨，研究了基于三层交换机嵌入式病毒防御与信息监控系统要解决的技术问题，并依据现有的技术提出了解决方案及发展的趋势。

A single microcontroller I/O pin senses the state of a three-position switch.

单个微处理器I/O引脚感知三位置开关的状态。

Safety and fire mode selector are incorporated into one three-position switch, located in front of the trigger on the left side of the trigger unit housing.

安全和消防模式选择被纳入一个三位置开关在对单位住房触发触发左侧前方。

The article presents the developing condition of PWM and SVPWM first.Then the theory of SVPWM is discussed in detail.The SVPWM is based on the thought of magnetic chain tracking.It makes the ideal magnetic chain circle of three-phased sysmmetry electric motor supplied by three-phased sysmmetry sine wave voltage for basis,uses the practical magnetic chain vector formed by the different switch modes of three-phased inverter to track the basic magnetic chain circle.During the course of tracking,the inverter changes the switch modes properly to form the PWM waves.Then the modulation wave of SVPWM is analyzed in detail.The modulation wave of SVPWM is implicit,but the analogous modulation wave in A-B-C axis needs to be calculated in order to expose the internal relation of SVPWM and SPWM.That is to show the implicit modulation wave of SVPWM. SVPWM actually is a transformed SPWM ruly sampled by the modulation wave which is injected by the zero prefaces based on space vectors.

本文首先对脉宽调制技术的发展现状进行了综述，在此基础上分析了电压空间矢量脉宽调制技术的发展现状；接着对空间电压矢量脉宽调制技术的基本原理进行了详细的分析和推导，SVPWM是基于磁链追踪的思想，它以三相对称正弦波电压供电下三相对称电动机定子理想磁链圆为基准，由三相逆变器不同开关模式下所形成的实际磁链矢量来追踪基准磁链圆的，在追踪的过程中，逆变器的开关模式作适当的切换，从而形成PWM波；然后详细分析了电压空间矢量脉宽调制技术的调制波，虽然SVPWM法的调制波是隐含的，但是为了揭示SVPWM法与SPWM法的内在联系，需要求出SVPWM在A-B-C坐标系上的等效调制波，也就是将SVPWM的隐含调制波显化；SVPWM实质是一种基于空间矢量在三相正弦波中注入了零序分量的调制波进行规则采样的一种变形SPWM。

Shandong journey from the journey from Canton Electronics are electronics factory in Jinan in Shandong to set up offices, is responsible for "PCER journey from" Series Products in Shandong Province and other channels of distribution and after-sales service, Canton journey from an electronics factory (line forming the Department of cable) is a professional manufacturer of VGA lines / HDMI Digital Line / DVI digital line / USB Line / Parallel Port Print Line / 1394 digital line / KVM and three lines / MP3 Line / MP4 Line / power cord / AV Audio Video Cable / PS2 mouse keyboard line / network and other computer peripherals jumper cable; 2 are specialized in the production line RVV jacket / RVVP shield / 75-3 75-5 SYV Coaxial / 3 +4 3 +6 five core RGB coaxial lines and other projects large-screen security monitor cable; are specializing in the production of three VGA divider / VGA switch / VGA video devices extended / KVM Switch / KVM Extender / PC to TV (VGA signal transduction AV signal) converter / DVI digital signal splitter / DVI Switch / HDMI Splitter / HDMI switches and other products.

山东征途者电子是广州征途者电子厂在山东济南成立的办事处，主要负责&PCER征途者&系列产品在山东省的渠道分销及售后服务等，广州征途者电子厂一部是专业生产VGA线/HDMI数字线/DVI数字线/USB线/并口打印线/1394数码线/KVM三并线/MP3线/MP4线/电源线/AV音视频线/PS2鼠标键盘线/网络跳线等电脑周边连接线；二部是专业生产RVV护套线/RVVP屏蔽线/75-3 75-5 SYV同轴线/3+4 3+6 五芯同轴RGB大屏幕线等工程安防监控线缆；三部是专业生产VGA分频器/VGA切换器/VGA影音延长器/KVM切换器/KVM延长器/PC转TV转换器/DVI数字信号分配器/DVI切换器/HDMI分配器/HDMI切换器等产品。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。