In support of the chief executive s policy address in 1999 on environmental improvements , transport department is actively participating in this aspect which includes identification of environmental improvement measures by the third comprehensive transport study ( cts - 3 ) , conversion of diesel to liquefied petroleum gas ( lpg ) taxis , exploring alternative fuel buses , rationalization of franchised bus fleet , controlling bus numbers , improving vehicle emission , stepping up vehicle maintenance and implementing pedestrian schemes 为配合行政长官1999年施政报告内有关改善环境的措施,运输署现正积极进行这方面的工作,包括探讨由第三次整体运输研究报告所提出的改善环境措施、由柴油的士转用石油气的士、研究使用另类燃料的巴士、重组专营巴士车队、控制巴士数目、改善车辆排放废气的情况、加强车辆维修工作、实施行人环境改善计划。
Adopting the method of top - down , the virtual memory is divided into memory mange related unit ( segment unit and page unit ) and protection mode related unit ( protection test unit , debug test unit and exception detect unit ) . data buses and control bused are designed separately for all of the units . vhdl codes are written and simulated Amex86的虚拟存储器采用自顶向下的设计方法,把虚拟存储器划分为地址管理相关单元(又包括分段单元和分页单元) 、保护模式相关单元(又包括保护测试单元、调试异常单元利异常检测单元等) ,分别确立其数据通路和控制通路,完成了vhdl的编码和仿真工作,通过测试程序仿真验证了其功能的正确性并测定了基本性能。
In support of the chief executive s policy address in 1999 on environmental improvements , transport department is actively participating in this aspect which includes identification of environmental improvement measures by the third comprehensive transport study cts - 3 , conversion of diesel to liquefied petroleum gas taxis , exploring alternative fuel buses , rationalization of franchised bus fleet , controlling bus numbers , improving vehicle emission , stepping up vehicle maintenance and implementing pedestrian schemes 为配合行政长官1999年施政报告内有关改善环境的措施,运输署现正积极进行这方面的工作,包括探讨由第三次整体运输研究报告所提出的改善环境措施、由柴油的士转用石油气的士、研究使用另类燃料的巴士、重组专营巴士车队、控制巴士数目、改善车辆排放废气的情况、加强车辆维修工作、实施行人环境改善计划。
A control bus is (part of) a computer bus, used by CPUs for communicating with other devices within the computer. While the address bus carries the information on which device the CPU is communicating with and the data bus carries the actual data being processed, the control bus carries commands from the CPU and returns status signals from the devices, for example if the data are being read or written to the device the appropriate line (read or write) will be active (logic zero).