为执行部件EU执行指令做好准备 物理地址送到总线部件BU的地址锁存器和驱动器中，所长生的地址是物理存储器地址或I/O设备的端口。二 指令部件（Instruction Unit, IU) 指令部件IU由指令译码器和已被译码的指令队列组成，其功能是不断的从总线部件BU的预取代码队列中取
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例如，文本节点、CDATA部件、注释、处理指令、属性、空格、文档类型和XML声明具有值。
For instance, text nodes, CDATA sections, comments, processing instructions, attributes, whitespace, document types, and XML declarations have values.
属于该指令范围的所有机械和安全部件必须进行适当的符合性审核程序评定才能合法地投放于市场。
All machinery and safety components falling within the scope of the Directive must be subjected to an appropriate conformity assessment procedure before they can be legally placed on the market.
浮点加法器是协处理器的核心运算部件，是实现浮点指令各种运算的基础，其设计优化是提高浮点运算速度和精度的关键途径。
High-Speed Floating-point Adder is a critical part in the coprocessor, which is attached to the computing basis of floating-point instructions.
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