伴随着巨大的烟云，在尼拉贡戈火山直径一英里的火山口里，熔岩在像一口锅里一样上下翻滚。这座位于刚果境内的活火山威胁着两百万人民的生命财产安全。
Exhaling clouds of gas, a cauldron of lava boils in the mile-wide crater of Nyiragongo, an active volcano in the Congo that threatens two million people.
实际切圆直径是锅炉稳定安全运行的一个重要参数，炉膛出口残余旋转是造成烟温偏差的主要原因。
The diameter of actual tangent circle is an important parameter for safety of boiler, the residual rotation is the key factor of flue gas temperature deviation at furnace exit.
另外，指定了一种被称为直径指数安全系统(DISS)的高完整性接头用于氮的使用。收藏。
In addition, a high-integrity connection known also as a Diameter Index Safety System (DISS) connection has also been assigned to nitrogen.
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