您要查找的是不是：
- 梯度IPNGradient fins
- 温度梯度temperature gradient (TEMPGRAD)
- IPN凝胶IPN hydrogel
- IPN涂料IPN paint
- 浓度梯度concentration gradient
- IPN技术IPN technology
- 梯度洗脱gradient elution
- IPN网络InterPlaNetary Internet
- IPN胶粘剂IPN Adhesive
- 饱和梯度saturated gradient
- IPN水凝胶IPN shydrogel
- 速度梯度velocity gradient
- IPN阻尼材料IPN damping material
- 表面梯度surface gradient
- 互穿网络（IPN）Interpenetrating polymer network (IPN)
- 边沿梯度edge gradient
- 丙烯酸酯IPN体系acrylate IPN system
- 边缘梯度edge gradient
- IPN压电阻尼材料IPN piezoelectric damping materials
- 变梯度法variable gradient method
