这两步都必须处理为一个逻辑工作单元(即事务)，其中任何一个服务的失败都会向用户发送失败的信息。
Both steps have to be processed as a logical unit of work, and failure in one of the services will result in a failure message to the user.
Transaction-确定组件处理执行的逻辑工作单元。
Transaction - Determines the logical unit of work that the component's processing executes.
服务合成(service composition)是相当复杂的，而且常常涉及到事务、工作单元边界、错误处理、安全性与证书分发、以及业务逻辑聚合等方面的问题。
Service composition is highly complex and often includes transactions, unit-of-work boundaries, error handling, security and propagation of credentials, and aggregation of business logic.
用户可以下多个购买订单，并且每一个订单将会作为一个单独的逻辑单元来处理。
The user is allowed to place more than one buy order, and each buy order will be treated as a separate logical unit of work.
模型/逻辑单元处理所有的ClearCase用户接口和命令行；相反，片断则存在限制。
Model/LUs work with all ClearCase user interfaces and the command line; whereas, limitations exist regarding Fragments.
计算机中，解释并执行指令的一种功能单元。注：处理器至少包含有一个指令控制器和一个算术与逻辑运算器。
In a computer, a functional unit that interprets and executes instructions. Note: a processor consists of at least an instruction control unit and an arithmetic and logic unit.
运算器：运算器是数据加工处理部件，它是由算术逻辑单元(alu)、累加器、数据缓冲器等组成。
Arithmetic unit: arithmetic unit is a data processing unit that consists of arithmetic logic unit (ALU), accumulator, data buffer, ect.
算术逻辑运算单元（ALU）决定着中央处理器（CPU）的性能，而加法器又决定着ALU的性能。
The arithmetic logic unit(ALU) decides the performance of the Central Processing Unit(CPU), while the adder decides that of the ALU.
模型层：主要负责业务的处理逻辑实现与数据库的交互等，是该系统的主要计算单元。
Model layer: responsible for handling business logic interacts with the database, are the system 's main computing unit.
其次，指令发射逻辑是超标量处理器中的关键路径，也是制约执行单元为超标量结构的多线程处理器主频提高的关键因素。
Secondly, the issue logic is not only the critical path in a superscalar microprocessor, but also critical to the performance of a multithreaded microprocessor with superscalar execution core.
数字信号处理器包含了中央算术逻辑单元、乘法器单元、移位器单元、排序器单元、辅助寄存器单元、中断单元的设计。
The digit signal processor embodies the center arithmetic logic unit, Multiplier unit, Shifter unit, Sequencing unit, Auxiliary register unit, interception unit.
逻辑控制电路由CPLD完成，主要完成整个处理单元的时序和逻辑控制。
Logical control circuit is implemented by CPLD, and its main function is the whole units time sequence and logical control.
中央处理器时间：在计算机的算术和逻辑单元里，处理一组指令所需要的实际计算时间。
CPU time: the actual computational time necessary to process a set of instructions in the arithmetic and logic units of the computer.
根据单元级联多电平变换器拓扑结构及其脉宽调制技术的特点，以数字信号处理器和复杂可编程逻辑器件为核心，设计了多电平变换器的控制器。
On the basis of topology of cascaded multilevel convertor and its PWM technique, designed the controller of multilevel convertor at the core of DSP and CPLD.
处理器包含一个时钟，一条指令控制单元，一个算术和逻辑单元，并登记。
The processor contains a clock, an instruction control unit, an arithmetic and logic unit, and registers.
他由一个8位6502CPU（不支持整数模式，也被称为BCD），DMA传输单元，伪音频处理单元，1/12时钟分频器，以及1位逻辑单位的地址译码。
It consists of an 8-bit 6502 CPU (without support for decimal mode, also known as BCD), DMA transfer unit, pseudo audio processing unit, 1/12 clock divider, and a bit of logic for address decoding.
设计了一种以fpga为数据采集逻辑控制单元，以dsp为高端图像处理单元的数字图像处理系统。
The digital image processing system is designed based on DSP and FPGA. In the system FPGA is used as a main logic unit and DSP as advanced image processing unit.
设计了一种以fpga为数据采集逻辑控制单元，以dsp为高端图像处理单元的数字图像处理系统。
The digital image processing system is designed based on DSP and FPGA. In the system FPGA is used as a main logic unit and DSP as advanced image processing unit.
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