crucible lifting bar

例句：

1. 1. The crucible lifting baris used to lift the crucibleduring the melting process.
   坩埚提升杆用于在熔炼过程中提升坩埚。
2. 2.The crucible lifting bar is essentialfor maintaining proper temperature control during the melting process.
   坩埚提升杆对于在熔炼过程中保持适当的温度控制至关重要。
3. 3. Thecrucible lifting bar was designed toprevent the crucible from falling duringthe melting process.
   坩埚提升杆被设计成在熔炼过程中防止坩埚掉落。