The protective design for urban historical environment is what the protection of urban historical environment and urban design combined , it means we can carry out protecting urban historical environment by the means of urban design 城市历史环境保护与城市设计是不可分割的，二者契合成城市历史环境的保护设计，就是以城市设计的方法去实现城市历史环境保护。
Historical architecture involves in itself and historical architecture around . . new architecture involves in optic protection and nonfigurative protection for urban historical environment . the second arrangement is historical region 城市中一部分新建筑也属于历史环境的保护设计范畴，它们的设计或与历史环境的视觉保护有关，或与历史环境的抽象保护有关。
Smartlock pro software protection lock s " mcu " hardware circuit design is much different from other locks designed by asic or eeprom circuit on the market . using " mcu " as main hardware protection design circuit has the following advantages Smartlock pro软件保护锁的mcu硬件线路设计与市面上采asic或eeprom线路设计的保护锁有很大的差异，采用mcu为主要硬件保护设计线路有下列的几个优点
Smartlock usb software protection lock s " mcu " hardware circuit design is much different from other locks designed by asic or eeprom circuit on the market . using " mcu " as main hardware protection design circuit has the following advantages Smartlock usb软件保护锁的mcu硬件线路设计与市面上采asic或eeprom线路设计的保护锁有很大的差异，采用mcu为主要硬件保护设计线路有下列的几个优点
Smartlock netpro software protection lock s " mcu " hardware circuit design is much different from other locks designed by asic or eeprom circuit on the market . using " mcu " as main hardware protection design circuit has the following advantages Smartlock netpro软件保护锁的mcu硬件线路设计与市面上采asic或eeprom线路设计的保护锁有很大的差异，采用mcu为主要硬件保护设计线路有下列的几个优点
Routing and wavelength assignment ( rwa ) algorithm is the key problem of mplms control layer . a dynamic routing and wavelength assignment ( rwa ) algorithm with the design pr otection is proposed , with load balance and capacity constraint of physical links taken into account 路由和波长分配( rwa )是mplms控制层面的一个重要问题，本文基于考虑链路负载均衡和容量限制提出了一种具有保护设计的动态路由和波长分配算法。
In order to design a reliable cathodic protection system for a ballast bank , it is necessary to develop a quantitative model for the shielding effect due to the inner structures on the protection current in a cathodic protection system of a ballast tank through a lot of numerical simulation or practical measure 需要通过大量的数值模拟计算或实测，得到各种挡板对保护电流的屏蔽效应的定量化模型，以确立新的适合于压载舱的阴极保护设计的技术体系。
Fristly , according to the non - linear characteristics of twelve - phase rectifier , the thesis gives the calculation model for a short circuit in the subway traction power supply networks which provides the academic foundation for the design of the setting values and the simulation of protection . secondly , the thesis designs the dc feeder protection and control of subway , and gives the principle of setting accordingly , after it analysizes the characteristics of electric current under tow load and short circuit and considers severel factors . to validate the rationality of the design , the thesis simulates the transient electric current under two work conditions ( starting and passing the insulation ) ahd short circuit 其次，本文在详细分析地铁牵引负荷电流和馈线短路故障电流特点的基础上，考虑了直流保护系统设计应注意的几个因素，对地铁馈线保护与控制进行配置，给出了相应的保护整定原则，并针对某一地铁供电系统在详细分析了两种工况(机车起动与过分段绝缘)的电流暂态过程，得到了电流计算的数字模型，结合前面提出的短路模型，进行了地铁馈线保护的仿真，经仿真表明本文的保护设计是合理的。
From the aspect of space cognition , this paper divides the human , land and housing in the historical quarters into the four levels of building , courtyard , zone ( neighbor ) and street lane with the degree of substantial space , combines the geographical information system and propose the new method of conservation and rehabilitation in historical quarters based on gis technology 摘要从空间认知的角度，将历史街区的人、地、房从物质空间层面上分为建筑、院落、地块（街坊）以及街巷四个层次，结合地理信息系统提出基于gis历史街区保护设计新方法。
