单词	三次对称
释义	三次对称threefold symmetry
随便看	data definition--dd data definition facility data definition language data definition language (ddl) data definition language {=ddl} data definition language--ddl data definition language utility data definition language，ddl data definition name data-definition query data definition statement data definition，dd data delay data delimiter data demand protocol data density data dependence data dependence graph data dependence relation data dependence test data dependency data dependency theory data-dependent data dependent computation data-dependent hazard