combined water的用法和样例：
例句
- Diglycerol has a lower hydroxyl number than glycerol, which imparts a lower water binding ability upon the product.
双甘油分子的羟基密集度要比甘油低，这相对降低了结合水的能力。 - Additional contributions to catalysis can come from bound water molecules, metal ions, or other factors.
其它促成催化的因素来自结合水分子，金属离子或其它因子。
