生铁标号、生铁等级 pig iron brand

铁路等级 railway classification ; classification of rail ; classification of railways

不等边角铁 unequiqual side angle steel ; [材] unequal angle iron ; Steel unequal angles hot rolled ; L iron

等边角铁 equal angle iron ; equal angle bar ; Steel equal angles hot rolled

等吹熔铁炉 equi-blast cupola

等轴状铁素体 equiaxed ferrite ; polygonal ferrite

次等铁板 Second Choice Iron Sheet

超等高铁 Hyperloop

铁路特等客运站 Top-grade railway passenger station ; Giganic railway passenger station

等轴铁素体晶粒 equiaxed ferritic grain