?烧结成炉底

... 静摩擦 friction，static 彩色光纹，光栅 fringe 烧结成炉底 fritted hearth bottom ...

?烧结炉底

... carbon hearth bottom 碳质打结炉底; 碳质炉底; 炭质打结炉底 fritted hearth bottom 烧结炉底 fused hearth bottom 烧结炉底 ...