adj.使用平炉(炼钢)的
A log fire roared in the open hearth. 柴火在敞开着的壁炉里熊熊燃烧。
Later added 2 open hearth furnaces for producing steel castings. 后来又说2平炉电炉生产铸钢件。
She was standing far too near the open hearth and her nightdress caught fire. 她站的地方离壁炉太近，所以她的睡衣着火了。
One way to do this is by using an open hearth furnace,where pig iron and scrap steel are heated. 炼钢的一种方法是将生铁和废钢放在平炉内加热。
The fuel burner of an open hearth furnace is water cool, as is the valve that regulate the flow of air and waste gases. 平炉的燃料燃烧室是用水冷却的，控制空气和废气的阀也是水冷的。
One way to do this is by using an open hearth furnace, where pig iron and scrap steel are heated . 炼钢的一种方法是将生铁和废钢放在平炉内加热。
