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.
Definition of reciprocity for English Language Learners. : a situation or relationship in which two people or groups agree to do something similar for each other, to allow each other to have the same rights, etc. : a reciprocal arrangement or relationship.