把自然热位差当做自然风压在理论上是模糊的，是不符合矿井实际情况的。
Taking natural thermo-potential difference as natural draft pressure is ambiguous in theory and not in accord with the actual condition of mines.
阐述了造成主井回风的自然热位差产生原因和对通风系统的影响，以及治理办法。
Mine, the causes of natural thermal potential difference in return air in main shaft and its influence on mine ventilation system and the control methods.
它们之所以能起作用是因为一般的材料，比如碲化铋，如果其中一部分比另一部分热，内部就会产生电位差。
They work because certain materials, such as bismuth telluride, generate an electrical potential difference within themselves if one part is hotter than another.
应用推荐