1.The heat exchanged by nature convection between cylinder ektexine and air was equivalent to that from the holes on plastic cylinder.
筒外壁与温室空气间的自然对流换热量和塑料筒放热孔与室内空气的换热量相当。
2.Large, thick copper ektexine, feels powerful------Typical thing in Shang Zhou dynasty! -------Welcome discussion!
个头大，铜壁厚，整体感觉霸气------典型商周之物！-------欢迎讨论哦！