尽管DB 2优化器对选择最佳访问路径有所帮助，但结果还是依赖于输入数据，优化器无法访问或控制这些数据。
Although the DB2 optimizer is helpful for selecting the best access path, the result depends on the input data, which is often not accessed or controlled by the optimizer.
选择结构化活动(也称为切换)根据条件控制流程采用的路径。
A choice structured activity (also known as a switch) controls which path the process takes, based on a condition.
一旦乘客选择好了目的地，控制系统会记录下要求，并向舱车发送一条信息，随后舱车会遵循一条电子传感路径前进。
Once the destination has been chosen, the control system logs the request and sends a message to the vehicle, which then follows an electronic pathway.
子系统支持服务程序的路径选择或控制程序。此程序根据所有子系统支持服务功能的优先级提供多任务和控制支持。
The routing or controlling routines of Subsystem Support Services. This routine provides multitasking and control support, on a priority basis, for all Subsystem Support Services functions.
的路径选择或控制程序。此程序根据所有子系统支持服务功能的优先级提供多任务和控制支持。
The routing or controlling routines of Subsystem support Services. This routine provides multitasking and control support, on a priority basis, for all Subsystem support Services functions.
控制系统被配置为根据客人变量来确定客人状态，并且调整场所变量，例如，通过选择主题公园骑乘设备所遵循的路径。
The control system is configured to determine a guest state from the guest variable, and to modify a venue variable, for example by selecting a path a theme park ride follows.
选择贝塞尔路径，粒子阵列和矩阵式的模式：文本会产生无序的最酷的影响，同时给你良好的印刷控制。
Choose from Bezier paths, particle arrays, and Matrix-style patterns: Text Anarchy will generate the coolest effects while giving you fine typographic control.
选择摄像机目标点，指定噪波控制器给它，替代原先的路径约束。
Select the camera target, and assign the Noise Position controller to it, instead of the Path Constraint.
通过在自适应零温度弦方法中选择合适的控制函数，可以使得最小能量路径上的网格点密度在这些临界点附近比较大。
By choosing an appropriate monitor function, the density of mesh points near the critical points can be bigger than that near other points on the minimal energy path.
交通流仿真系统的模型主要包括车辆产生模块、交叉口信号控制模块、路段车辆行驶模块、交叉口前车辆路径选择模块。
This model includes vehicle create mode, cross signal control mode, vehicle running mode and cross routing choice mode. In this model, the vehicles are organized in the different groups.
通过阐述城市医疗救助费用控制的研究现状，指出城市医疗救助费用控制研究存在的问题：缺乏系统的研究、没有提出适宜的控费模式和路径选择。
By describing the current situation, the problems in urban medical assistance cost control are pointed out: the lack of systematic research, and no suitable control model and routing choice.
通过阐述城市医疗救助费用控制的研究现状，指出城市医疗救助费用控制研究存在的问题：缺乏系统的研究、没有提出适宜的控费模式和路径选择。
By describing the current situation, the problems in urban medical assistance cost control are pointed out: the lack of systematic research, and no suitable control model and routing choice.
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