crucibleless technique

例句：

1. 1.The crucibleless technique has greatly improved the efficiency of casting.
   无模铸造技术大大提高了铸造的效率。
2. 2. This new method is a breakthrough in the crucibleless technique.
   这种方法是无模铸造技术的突破。
3. 3. The crucibleless technique is widely used in the production of high-quality castings.
   无模铸造技术广泛应用于高质量铸件的生产。