This summer one of Mississippi's prisons installed a system known as managed access—the first such installation in a mainland American prison, though a prototype has been tested in Puerto Rico.
今年夏天，密西西比州的一家监狱安装了一个叫做“信号门禁”（managed access）的装置。尽管波多黎各已对此装置的雏形进行过实验，但是在美国境内还是首次安装。
This summer one of Mississippi's prisons installed a system known as managed access-the first such installation in a mainland American prison, though a prototype has been tested in Puerto Rico.
今年夏天，密西西比州的一家监狱安装了一个叫做“信号门禁”(managed access)的装置。尽管波多黎各已对此装置的雏形进行过实验，但是在美国境内还是首次安装。
Developed a Capacitive Current Collector prototype with opposite disc layout, and analyzed of a fixed installation on the performance of the work.
研制出一种具有相向圆盘式布置方式的电容式集流环样机，分析了固定安装方式对集流环工作性能的影响。
The wing and fuselage of the first prototype has been mated and systems installation is underway.
第一架的机翼和机身已经连接，正在安装各个系统。
In the third week, we managed to revise the design and complete the installation, but the prototype could not run.
第三周，我们修改了设计，搭建好设备却根本无法运转。
In the third week, we managed to revise the design and complete the installation, but the prototype could not run.
第三周，我们修改了设计，搭建好设备却根本无法运转。
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