单词 trigonal 释义 trigonal, a. (n.)|trgnl|[ad. L. trignl-is, f. trign-um: see prec. and -al1.]A. adj.1. a. Of, pertaining or relating to, a trigon or triangle; of the form of a triangle, having three angles, triangular. (In quot. 1570 = triangular 2 b.)...