松开钢丝绳是依靠重力的作用，而缠绕钢丝绳则是借助于电马达或柴油机。
The reeling out of the drilling line is powered by gravity and reeling in by an electric motor or diesel engine.
经过反复测算，依靠光伏发电装置，建筑本身正常运转无需借助于外部供电。
After repeated calculations, relying on photovoltaic power generation devices, the building itself without the help of external power supply.
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