compoundfree beta alloy

例句：

1. 1. The steel is a compound free beta alloy.
   这种钢是一种复合无β相合金。
2. 2. The new alloy has better heat resistance than the old one.
   这种新合金的耐热性比旧的要好。
3. 3.The engineers were experimenting with different alloys to improve the strength of the material.
   工程师们正在尝试不同的合金来提高材料的强度。