free-field condition

例句：

1. 1. The researcher found that the free-field condition was crucial for the experiment's success.
   研究者发现，自由场条件对于实验的成功至关重要。
2. 2.In the free-field condition, the particles can move freely without any constraints.
   在自由场条件下，粒子可以自由移动，不受任何约束。
3. 3. The free-field condition is essential for the development of new materials.
   自由场条件对于新材料的发展至关重要。