melting-speed ratio

例句：

1. 1. The researchers found that the temperature of the material had a significant effect on its melting speed.
   研究人员发现，材料的熔点对其熔化速度有显著影响。
2. 2.The engineer designed a new machine that could quickly adjust the melting speed ratio to meet different production needs.
   工程师设计了一台新型机器，能够快速调整熔化速度比例，以满足不同的生产需求。
3. 3. In this experiment, we measured the melting speed ratio of different materials and found that it was relatedto their chemical composition.
   在这个实验中，我们测量了不同材料熔化速度比例，并发现这与它们的化学成分有关。