The center was testing its emergency operations system at the time.

事发时该核电站正在测试其应急操作系统。

It was easier, though never easy, for them to grasp the Patriot system operations and maintenance concepts.

对他们来说，掌握爱国者系统的操作和维护概念更容易，虽然从来都不容易。

The significance of the system's operation lies in introducing an advanced network shopping concept in China's commodity trade business.

这一系统投入运行的意义在于，将先进的网络购物概念引入中国的商品贸易市场。

(5) One hour before inert gas system operation is required (for tanker)?

(5) 惰性气体系统需要运行前一小时（液货船）？

We've already seen Elon Musk himself come out and say that he's going to remain as Twitter's executive chair and chief technology officer, which means he'll be overseeing the product, engineering, software, systems, operations, etc.

我们已经看到埃隆·马斯克本人站出来说，他将继续担任推特的执行主席和首席技术官，这意味着他将监督产品、工程、软件、系统、运营等。