查询词典 RC

The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance.

巴士开关没有propagational拖延贡献超过了导通电阻的开关和负载电容RC延迟等。

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

The hardware processing method includes adding Smiter trigger in RC filter circuit to plastic the output wave of filter circuit, acquiring front steep output signal of and making reverse operation in CPLD.

硬件处理方法是在RC滤波电路的输出端加施密特触发器，对滤波电路的输出整形，取得前沿很陡的输出信号，并在CPLD中对信号作反相处理。

The coding gain achieved by a convolutional code over an uncoded system is depends on the date rate Rc and the minimum free distance .

使用卷积编码的系统较之未编码系统的编码增益取决于码率Rc和最小自由距离。

Compared with the method of Lg[N00-N], the method of Lgderivative is more accurate. A simple and flexible signal source of multiple decay was designed with the linear adding of many RC charging signals. Two suits of multiple decay data which are acquired independently over a 10th order time span indicate that, the shape of the Lg derivative peak is coherent with its theoretical peak unitarily.

独立进行的两组不同的10 个时间数量级的数据都表明，复杂衰减过程的实验数据的K-Lg微分峰形曲线，与以各元件RC 值计算出的衰减寿命值和测量各单一充电过程的衰减量实验数据为参数，再由理论公式产生的曲线比较，两者在曲线整体形状上有很好的一致性。

Leather chemicals pavilion: surfactant, degreasing agents, disseminated dyes and chemical additives, fatliquor, metal complex dyes, coating materials, PU plastic, surface treatment agent, Wan Nengjiao, hardening agent, zinc stearate, Release agent, shoe adhesives, cleaning agents soles, resin curing agent RC, polyurethane products.

四、 皮革化工展区：表面活性剂、脱脂剂、浸染染料、化工助剂、加脂剂、金属络合染料、涂饰材料、PU胶、表面处理剂、万能胶、硬化剂、硬脂酸锌、脱模剂、制鞋胶粘剂、鞋底清洁剂、树脂固化剂RC、聚氨酯制品。

At the same time, the RC-time control circuit can control the temporary and steady time of the IC555 and set the the water supply time to achieve the purpose of measuring the water supply and supplying water on compensation.

同时，RC时间控制电路对单稳态电路的暂稳态时间进行控制，设定供水时间，达到计量和有偿供水的目的。

When there are contactor or automatic switch exists, you can parallel connect capacitance or RC circuit that series connected with resistance and capacitance on the input terminal, or series connected with electromagnetic filter and filter circuit that made by LC to prevent from error connection caused by electromagnet interference.

尤其是现场有接触器、自动开关时，可在输入端并联电容或由电阻、电容串联组成的RC电路，或者在输入端串联由LC组成的电磁滤波器、滤波电路，以防止由电磁干扰引起的误接通。

Our products includes the RC series Optical Transceiver, BAMS (Broadband Access Management System) and the Ethernet switch..

公司的主导产品为全系列光纤收发器、宽带业务运营支撑系统、RC系列以太网交换机。

To confirm the cells' bone marrow origin, chimeric mice were createdby the rescue of irradiated C57BL/6 mice with marrow fromROSA26, a congenic line expressing lacZ. I/RC resulted in a large population of spindle-shaped fibroblasts containing lacZ.

为了证明这些细胞的骨髓源性，我们利用ROSA26对C57BL/6系小鼠进行照射制作了嵌合子小鼠模型（一种能表达lacZ的同类系），从中发现I/RC产生了大量含有lacZ的纺锤形纤维母细胞。

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。