常见例句His aim was to improve the efficiency of the open fire by the use of lumps of fireclay and by a canopy, both designed to increase the amount of radiant heat.他通過爐蓋和火泥塊的使用來起到改善敞開的爐子的傚率的目的，這兩項設計提高了熱輻射量。 返回 fire clay