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Based studies were done on radiation spectrum, voltage to current character and modulation property of white LEDs when they are used as optical transmitters. Then the configuration and systematic design techniques are concentrated concerning white LED lighting source communication with numerical analyses and computer simulations done as well as high speed modulation techniques, visible light receiver design and means to alleviate inter symbol interference along with background noise problem.

在对白光LED用作通信光源时的光谱特性、伏安特性、调制特性等物理特性做深入分析的基础上，重点研究了白光LED照明光源通信系统的组成结构和系统设计，进行了数学计算分析模拟，并设计出了白光LED高速调制电路和可见光接收电路，并就如何削弱码间串扰和背景光噪声对通信系统的影响进行了讨论分析。

A resistor is connected between the output end of the live wire and the output end of the earth wire, another resistor is connected between the output end of the null line and the input end of the earth wire, a neon lamp in a photoelectric coupling switch is connected at the two ends of the earth wire switch in parallel after being connected with the resistors in series, one end of a light sensitive resistor in the photoelectric coupling switch GR2 is connected with the anode DC+ of an integrated circuit IC power in the creepage protector, the other end of the light sensitive resistor is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the triggering pole of the silicon-controlled rectifier SCR in the creepage protector, the neon lamp and the light sensitive resistor are positioned into a dark box, and a small hole which avoids the light sensitive resistor is formed on the dark box.

一种防止地线触点未导通的全能安全插头，包括各带开关的地、零、相三线接线和由零序互感器、脱扣器、放大器、整流器、试验回路和可控硅组成的漏电保护器，所述的火线输出端、地线输出端间连接电阻，所述的零线输出端、地线输入端间串接电阻，光电耦合开关内的氖灯与电阻串联后并联在地线开关两端，光电耦合开关GR2内光敏电阻的一端与漏电保护器内的集成电路IC电源正极DC＋连接、光敏电阻的另一端与二极管D3的正极连接，二极管D3的负极与漏电保护器内的可控硅SCR触发极连接，氖灯和光敏电阻置于暗箱中，暗箱上开一避开光敏电阻的小孔。

Any of several chiefly Mediterranean plants of the genera Asphodeline and Asphodelus in the lily family, having linear leaves and elongate clusters of white, pink, or yellow flowers.

日光兰，阿福花一种主要生于地中海的百合科植物日光兰属和阿福花属植物，有长叶片和白，粉红和黄色细长花串

In order to put the strings into several lines, we must separate each line with a carriage return-line feed pair.

为了将这些字串分行显示，我们必须在每个字符串后面放置一换行符。

T he child could be asked to point to different numbers and to describe their relationship to other numbers on the line.

也可能会要求孩子指出不同的数字，来描述它与这串其它数字之间的关系。

Adopt a to the Yangtze River of Grass for the line, Yan-Yan is to wrap rice dumpling; night, the mother or a stove fire in spring; next morning, a child woke up, filling the entire house with fragrance mirror in front of their own is a tiger - with a large amount of the "King"; in front of the long hanging calamus, wormwood, wrist around a string of five-color line.

采一把芦叶，以长江的江草作线，严严地裹实粽米；深夜了，母亲升一台灶，火融融的；第二天清晨，孩儿醒来，整个屋充盈着芦叶的清香；镜前的自己已是一只虎——额上有一只大"王"；门前挂着长长的菖蒲、艾草，手腕绕一串五色彩线。

A North American tree of the genus Liquidambar having prickly spherical fruit clusters and fragrant sap.

一种枫香树属的产于北美洲的树，有多刺的球形果实串和芳香的树汁。

This document is C8051 MCU external SRAM literacy test procedures using serial observation test results use of e...

摘 要：本文件是C8051单片机外部SRAM读写测试程序使用串口观测测试结果，使用外部22.1184MHz晶振。

The type of a wide string literal is an array of constant wide characters.

宽字符串字面值是一串常量宽字符，同样以一个宽空字符结束。

The lobule itself is surrounded by connectie tissue and has 5 to 7 clusters of essels around its edges.

小叶的周围是结缔组织，边缘围绕着5-7串脉管，有门静脉、肝动脉和胆小管。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。