Update README.md

README.md

@@ -10,7 +10,7 @@ ensures greater diversity than existing ones. Please refer to our [arXiv paper](
 
 # Features:
 
-1. Focusing on the **"kink" wings** (with two segments instead of one in the spanwise direction), which bring more complex flow features and are closer to the industry.
+1. Focusing on the **"kink" wings** (with two segments instead of one in the spanwise direction) under transonic regime (Mach number between 0.75 and 0.90), which bring more complex flow features and are closer to the industry.
 2. **More diversity** on the wing shape by generating them from basic parameters instead of perturbing from a baseline wing shape
 3. RANS simulation with **well-validated** solver `ADflow` and structural computational mesh.