Silicon nis melted in electric furnaces and, at the moment, most electricity is produced by burning fossil fuels. That does emit carbon dioxide.
在电炉中用来熔化硅的热量大多来自化石燃料燃烧产生的电力，而燃料燃烧会产生二氧化碳。
Smoke density measurement system of cables burning under certain conditions by the light source, the silicon photocell receiver and computer system.
电缆或光缆在特定条件下燃烧的烟密度光测系统由光源、硅光电池接受器和计算机系统组成。
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