Polycarbonate Diols (PCD) are used for a wide range of polyurethane-based coating formulations, providing an extreme durability and a high performance to the final polymer. ok
In mathematics, a reciprocity law is a generalization of the law of quadratic reciprocity. There are several different ways to express reciprocity laws.
Psychology Glossary. Reciprocity Norm. Reciprocity Norm refers to how positive actions bring about more positive actions while negative actions bring about more negative actions. For example, if a person receives a gift for their birthday, they are more likely to give a gift back to that person on their birthday.