爱词霸英语   汉语   手机版   软件版下载 | English
每日一句:正在加载...
1.In TTL NAND circuit, a phase inverter with its output circuit changed to an open collector.
在TTL“与非”门电路中，输出级改用集电极开路的一种反相器。收藏指正
2.The integrated test station for railroad-repair-shop based on Virtual Instrument (VI) and Lab VIEW technology is composed of VI, multifunction signal collector, analog digital I/O card, signal conditioning unit, regulating circuit and channel selector unit.
基于虚拟仪器和LabVIEW技术的机车辅保插件综合测试台由虚拟仪器、多功能信号采集卡、I/O模数输出卡、信号调整电路、系统调压电路及通道选择单元构成。收藏指正
3.DS2450 and DS18B20 have characteristics of single bus interface.Hardware and software of multipoint and multiparameter digital temperature and humidity data collector were designed based on sensor with analog output.The circuit of the system is simple and it has extensive applieation value.
利用DS2450和DS18b20具有单总线接口的特点,用模拟量输出的传感器,实现了多点多参数数字式温湿度数据采集器硬件和软件设计,该系统电路简单,具有广泛的应用价值。收藏指正
4.Three types of chemical polishing processes for the current collector of alkaline Zn/MnO2 battery were racommened including the H2SO4 - NaNO3 - HCI solution, the H2O2 - HNO3 solution and two - step polishing with bright carbon black. The performance of current collector polished was investigated by means of many methods, such as the volume of evolved hydrogen, contact resistance, EDX, the short circuit current, the capacity of the corresponding batteries and the compatibility with the environment.
针对碱锰电池集流体铜钉提出了 H2SO4－NaNO3－HCI、H2O2—HNO3和添加光泽碳黑的两步浸蚀等三种化学抛光工艺，并采用多种方法评价了化学抛光后铜钉的性能，其指标包括：铜钉的接触电阻、在锌粉中的折氢量、X射线能谱（EDX）、电池短路电流、电池容量等。收藏指正
5.RS-485 communication circuit in the communication board is used as a string line connector between the mainframe and sign collector. CPU transfers the data signals to the EMS memory appointed by the double channel RAM. ISA translates the address seeking signal which comes from computer into the RAM address seeking signal.
其中RS - 4 85通信电路作为主机与信号采集器进行串行通信 ,CPU将接收到的数据不经处理放入双口RAM指定的内存地址中 ,ISA总线接口将计算机发出的寻址信息译成对双口RAM的寻址信号 ,从而实现RAM的共享。收藏指正
尝试查询