One, the test unit skips digital to analog conversion.

首先，试验装置跳过了数模转换。

In a few days, the test unit's top will be installed, crowning the device with bristling pipes and sensors.

没过几天，测试装置的顶部就安装好了，顶部安装了竖立的管道与传感器。

The test unit looks surprisingly unimpressive: a shiny cylindrical drum only about 16 feet tall, resembling an oversize water heater.

测试装置外观出奇地不起眼: 一个闪亮的圆柱形鼓轮，高度约为16英尺，形似一个超大型热水器。

One source reported that as much as 68% of test units were found to be defective.

一位消息人士报告说， 多达 68% 的测试单元被发现有缺陷。

There, digital readouts count down the minutes, T-minus style, until power begins flowing to a test unit simulating the blistering heat of a new kind of nuclear reactor.

在那里，数字读数按照分钟倒数计时，直到电力开始流向模拟新型高温核反应堆的测试装置为止。