“复合物”的英语？

食盐是钠和氯的复合物.Common salt is a compound of sodium and chlorine.它们粘附在抗原 ― ―抗体复合物上.They bind to antigen -- antibody complexes.后一类物质中最有特征性的成份是鼠李糖 - 葡萄糖-IAA糖苷复合物.The best characterized member of this latter group is a rhamnose ...