基本释义
常见搭配
词形变化
n.
除虫菊
相关例句
pyrethrum
3.An insecticide derived from a plant, e.g. pyrethrum (from Chrysanthemum flowers).
4.The Shaoxing yellow wine organic phosphorus remains, the pyrethrum remains had not picked out.
5.A small Mediterranean plant(Anacyclus pyrethrum) containing a volatile oil once used for the relief of toothache and facial neuralgia.
6.white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum.
7.Made from natural pyrethrum, can quickly and effectively strike down flies and mosquitoes, and approved by the Chinese state Environmental Protection Administration.
8.Made with natural pyrethrum,it is well tested and passed by the technical experts. Very good smell and effective protection against mosquitoes.kill mosquito last for 8 hours.
9.order to optimize the culture conditions in cell suspensions of Pyrethrum cinerariifolium Trev, uniform design and central combination design are employed to test the improvement of medium components. The best paramenters were defined: saccharrose 40.60/L, nitrogen 85.95mmol/L. phosphor 0.78 mmol/L.
10.Rendle, Abie renestii Rehd,and the mixtures CTC are 142.46,126.17,320.50,117.76 individually. 2.Sabina vulgaris Antoine as synergists mixed with nature pyrethrum ,the optimalproportion was 5 1,which toxicities rate of KT50 was 0.5091,and the toxicities rate mortalitywas 1.1111 to Musca domestica L..