查询词典 switch-board

The invention discloses a DC/DC circuit, comprising a PWM controller, a current amplifier, a peak current comparator, an error amplifier, a main switch, a synchronous switch and also an operational amplifier. The non inverting input end of the operational amplifier is used for coupling with input voltage or voltage reference, or used for coupling with the input voltage and the voltage reference; the inverting input end of the operational amplifier is used for coupling with the voltage reference or ground, and the output end thereof is connected with the non inverting input end of the error amplifier.

本发明公开了一种DC/DC电路，包括PWM控制器、电流放大器、峰值电流比较器、误差放大器、主开关和同步开关；还增设运算放大器，其同相输入端用于与输入电压或基准电压耦合，或用于同时与输入电压和基准电压耦合；其反相输入端用于与基准电压或地耦合，其输出端与所述误差放大器的同相输入端连接。

Ironing table outlets all are 108 as per import technical requirement, whereas operation adopts pedal switch, where wind door is open by press pedal and loosen pedal gives rise to close wind door, on contrary, reverse switch is vice versa, wind door is open and press pedal leads to stop, making an easy operation and user friendly design.

在操作上采用点动式脚踏开关，可转换设计，脚一踩风门打开，脚一抬风门就停。转换开关相反，风门就常开，脚一踩就停。操作方便，更具有人性化设计。

Speed: Speed is the key first of all, I do not agree to switch hands qiang, I personally switch knife.

2速度：速度是关键首先我不赞成切换手qiang，我个人切换刀子。

The main products have switching power supply and a knife switch, isolating switch fuse group, high and low voltage transformer and other products.

主要产品有开关电源及刀开关、隔离开关熔断器组、高低压互感器等系列产品。

To push or pull the knife switch, one is not allowed to face the switch directly to prevent possible burning of one's face in case of shortcircuit.

推拉闸刀开关时，脸部不允许直对电闸，以防止短路造成的火花烧伤面部。

To push or pull the knife switch one is not allowed to face the switch directly to prevent possible burning of one's face in case of shortcircuit.

推拉闸刀开关时，脸部不答应直对电闸，以防止短路造成的火花烧伤面部。

High temperature of contact and junction point causes an accident due to poor contact of knife switch s contact and connector of high voltage switch cabinet and impact of load.

高压开关柜刀闸触头、出线电缆接头往往因接触不良、负荷冲击等因素引起触点和接点温度过高，造成事故发生。

Also at the same time, to cause to overhaul the personnel when to carry on the knife switch verifies has against harms the latch-up protection, and as 220 kV monitoring control unit's reserve method, is also loaded with the knife switch PLC installment in the booster station, causes the distant place, to operate has the electrical block system function, guaranteed that the operation is correct.

同时，为使检修人员在就地进行闸刀校验时也有防误闭锁保护，并作为220 kV监控装置的后备手段，在升压站还装有就地闸刀PLC装置，使远方、就地操作均具备电气闭锁功能，以确保操作正确。

The invention discloses a double-temperature double-chamber light wave sterilizing cabinet, which comprises the following parts: box, low-temperature chamber and high-temperature chamber in the box and control device, wherein the upper baffle rack is set in the low-temperature chamber, one lower baffle rack is set in the high-temperature chamber, the screen and keyboard are set on the box, the low-temperature chamber possesses first door with drawer switch and the high-temperature chamber possesses second door with drawer switch, the knife and fork rack is set on the bottom of first door, whose extending direction is vertical the door, the rotary lamp rack of ultraviolet tube is set in the low-temperature chamber, the light wave generating device is set in the high-temperature to emit light wave.

一种双温双室光波消毒柜，包括一箱体、设置在箱体内的低温室和高温室、控制装置，该低温室中设有一上隔物架，该高温室中设有一下隔物架，在箱体的上部依次设有显示屏、按键；该低温室具有抽屉式开关的第一门体，该高温室具有抽屉式开关的第二门体；在第一门体的底部设有一拉伸方向与门体拉伸方向垂直的、可以从左右两侧拉出的刀叉架；在该低温室内设有一设置有紫外线灯管的旋转灯架，在该高温室内设有一用于发射光波的光波发生装置。本发明消毒柜，使用范围广泛，功能齐全，消毒效果好。

R4The working principle of convergence reflection type photo switch is similar to that of direct reflection type one, while its projector and light receiver focus on object distance, only when the object presents to the focus can the photo switch actuate.

R3 会聚型反射式convergence reflection type 会聚型反射式的光电开关的工作原理类似于直接反射式光电开关，然而其投光器与受光器聚焦于物距离，只有当物体出现在聚焦时，光电开关才有动作。

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。