根本的问题是，与电力公司希望输送的电量相比，许多输电线路和它们之间的连接线路的额定负荷能力太小了。
The basic problem is that many transmission lines, and the connections between them, are simply too small for the amount of power companies would like to squeeze through them.
几年后，于1901年，瑞典公司山特维克开始与由钢制成，输送带生产。
Some years later, in 1901, the Swedish firm Sandvik started with the production of conveyor belts made out of steel.
与现场滚筒输送机的维修问题导致该公司寻求更好的解决方案。
Maintenance problems with the live roller conveyor led the company to seek a better solution.
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