求翻译：工业炉的设计的目的是参考现有炉型，以热工理论为指导，设计出结构更完善的炉体结构。本设计与传统的推钢式加热炉而言，它的优点是：运料灵活，必要时可将炉料全部排出炉外；料坯在炉底或梁上有间隔地摆开，可较快地均匀加热；完全消除了推钢式炉的拱钢和粘钢故障，因而使炉的长度不受这些因素的限制是什么意思？

Industrial furnace design aims to reference the existing furnace, guided by the thermal theory, design a structure better body structure. This design and traditional of push steel type heating furnace,, it of advantages is: games material flexible, necessary Shi can will burden all discharged furnace outside; material slab in furnace end or beam Shang has interval to were arrayed, can more fast to uniform heating; full elimination has push steel type furnace of arch steel and viscosity steel fault, thus makes furnace of length not by these factors of limit