chemical insecticide 中文意思是什麼
chemical insecticide
解釋
化學殺蟲劑- chemical : adj 化學的，化學作用的；應用化學的，用化學方法獲得的。n 〈常 pl 〉化學製品；藥品。 fine chemicals...
- insecticide : n. 殺蟲劑。 farm insecticide 農業殺蟲劑，農藥。 spray insecticide 噴射殺蟲劑。adj. -cidal 除蟲的 （insectisidal oil 殺蟲油）。
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Natural pyrethrins is a botanical insecticide made from extracts of chrysanthemum flowers while pyrethroids such as s - bioallethrin, cypermethrin, permethrin and cyfluthrin are its synthetic chemical analogues
天然除蟲菊素是一種從菊花提煉的植物性殺蟲劑，而擬除蟲菊酯是類似天然除蟲菊 -
It is mainly used as chemical intermediate, can be used as insecticide, for example making pesticide toad killing agent ; it can also be used to prepare quaternary ammonium compound to change property and synthesize various kinds of processing accessory ingredients and additives
四、用途主要用於化學中間體，可作殺蟲劑，如製造農藥殺蟆丹；還可制備季胺化合物，作為改性合成各種處理助劑和添加劑。 -
The insect - resistant varieties make their own insecticide a property meant to reduce the need for chemical sprays
植入抗蟲基因的作物會自行製造殺蟲劑，因此可望減少化學藥劑的噴灑。 -
It lacks transmission and spreading facilities, it must be applied like a chemical insecticide
缺乏傳播擴散工具，只能象化學藥劑一樣施用。
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