sintered glass filtering crucible

例句：

1. 1. Thesintered glass cruciblewas used to heat up the metal partsbefore they were assembled.
   这个烧结玻璃坩埚被用来加热金属部件，以便在组装之前进行预热。
2. 2. Thesintered glasscrucible was used tohold the molten metal while itcooled down.
   这个烧结玻璃坩埚被用来保持熔融金属的温度，直到它冷却下来。
3. 3. The sintered glass crucible was used toremove impurities from the moltenmetal.
   这个烧结玻璃坩埚被用来从熔融金属中去除杂质。