软件和系统开发的模型驱动方法已经使用了一段时间了。
Model-driven approaches to software and system development have been in use for some time.
随后，再让研究对象看一段关于免疫系统的视频。
Then the group watched a video that described the immune system.
第一次引导需要一段时间，因为系统自身需要配置。
The first boot takes a while as the system configures itself.
清扫人员输入一段代码通知系统该房间已被清扫完毕。
The cleaning personnel enters a code to signal that the room is clean.
这种阀门通常是位于第一段的汽车引擎系统。
This valve is often located at the top section of the car engine system.
在这一阶段的系统部署到目标用户。
这是我们的进攻体系，乃至这个系统第一阶段。
经过一年多大家的共同努力，系统终于告一段落了。
The system is at last accomplished by our efforts after over one year.
系统检测出错误的段号。
我试图机械系统相当长的一段时间。
操作系统通过很长一段时间，一些商店已经亏损。
Operating through the long period of time, some stores have been losing money.
系统可随意备份任意时间段的数据文件。
最后统计了一段时期内系统应用的实际工作情况。
Finally, count the actual work of the system applications within a period of time.
在儿科的年龄段方面的直观系统亏损也被讨论。
Visual system impairment in the pediatric age group is also discussed.
在这一阶段，于武与客户实施方提供专业的工艺支持与系统讲解。
At this stage, in wu and customer provides professional technology implementation of support and system.
这只是要求该系统应始终响应已知的一段时间。
It just requires that the systems should always respond within a known period of time.
这只是要求该系统应始终响应已知的一段时间。
It just requires that the systems should always respond within a known period of time.
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