基本释义
n.
pyrethrum
相关例句
除虫菊
4.An insecticide derived from a plant, e.g. pyrethrum (from Chrysanthemum flowers).
5.An insecticide made from the dried flower heads of Chrysanthemum cinerariifolium or C. coccineum.
6.A synthetic clear or amber-colored viscous insecticide, C19H26O3, similar to pyrethrin.
8.Control Effect of 2.5% Pyrethrins EC on Myzus persicae (Sulzer) in Tobacco Field
10.Diagnostic criteria and principles of management of occupational acute pyrethroids poisoning.
