There occur the electricaldifference in the copper ore and its wall rock, which possesses physical terms prior to look for the good conductor.
铜矿与围岩存在电性差，具备寻找良导体的物理前提条件。
2
The electrical energy generated originally by the wind turbines originally is stored as a temperature difference between the two rock-filled silos.
这种电能最初由风力涡轮机发电产生，然后以温差的形式存储于两个装满砂砾的筒仓里。
3
The structure would utilize atmospheric energy conversion by converting the difference in atmospheric pressure at the top and bottom of the structure into electrical power.