phase change paraffin

• 相变石蜡

phase change paraffin的用法和样例：

例句

1. Candles are made of paraffin wax.
   蜡烛是由石蜡做成的。
2. Paraffin, however, is not a good phlegmatizing agent.
   石蜡并不是良好的钝感剂。