雷声公司将为阿联酋在去年12月订购的10套火力单元提供备用件方面的支持。
Raytheon will provide spare parts to support the 10 Patriot fire units the Emirates ordered in December.
单元素模式可以确保应用程序通常只使用类的单个实例，但是仍然允许根据需要创建备用实例。
The singleton pattern ensures that only a single instance of a class is normally used by an application, but still allows alternate instances to be created as required.
一种准备用来存放数据的位置，例如打印页面上的一个位置或存储媒体中的一个单元。
A site intended for the storage of data, for example, a site on a printed page or a location in a storage medium.
在此次STS - 133任务中，“发现号”携带了补给、备用部件以及国际空间站的最后一个舱室-永久性多功能存储单元舱。
For the STS-133 mission, Discovery carried supplies, spare parts, and the Permanent Multipurpose Module, a storage unit that's the final piece of the International Space Station.
数据处理单元可以完成如任务调度器所指令的任务，向调度器传送任务结束信号并且转换到备用状态。
The data processing units may complete the tasks as instructed by the task scheduler, transmit task end signals to the scheduler and transition into standby states.
数据处理单元可以完成如任务调度器所指令的任务，向调度器传送任务结束信号并且转换到备用状态。
The data processing units may complete the tasks as instructed by the task scheduler, transmit task end signals to the scheduler and transition into standby states.
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