【机】 aromatic base
fragrant; good; virtuous
a group of things with common features; clan; family; race; strain
【化】 alkaline earths; family; group; odd series; periodic family; sub-group
subgroup
【医】 group; race; series; tribe
base; basic; foundation; key; primary; radix
【化】 group; radical
【医】 base; basement; group; radical