softening point tubes

例句：

1. 1. The material has a softening point of 100°C.
   这种材料有一个100°C的软化点。
2. 2.The temperature needs to be above the softening point for the oil to flow.
   温度需要高于软化点，油才能流动。
3. 3.The process of softening involves heating the material until it reaches its softening point.
   软化过程涉及加热材料直到它达到软化点。