graphite crucible

例句：

1. 1. The graphitecrucible was used to melt the metal for the next step in the process.
   石墨坩埚被用来熔化金属，为下一步工艺做准备。
2. 2. The graphite crucible was carefully cleaned before each experiment.
   每次实验前，石墨坩埚都需仔细清洗。
3. 3. The graphite crucible was used to hold the molten metal while it cooled.
   石墨坩埚用于在熔融金属冷却时保持其形状。