沿着安哥拉首都罗安达外的一条主干道，有一个叫Zango的卫星镇，一个铜硫层贯穿其中。
A BLUE metal fence runs through Zango, a commuter town along the main road out of Luanda, Angola's capital.
其主要材料是铝间隔条、弯角栓、丁基橡胶、聚硫胶、干燥剂。
Its main material is the corners, butyl rubber, plastic, desiccant and sulfur.
该过程采用“一锅法” ，操作方便，后处理简单，条件温和，提供了一条合成二硫醚的重要路线。
This one-pot procedure provides a useful and important synthesis route to disulfides under simple operation and mild conditions.
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