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- The tests showed that the plant volatile oils were the fumigants and had contact toxicity, the insects died rapidly. 用植物挥发油拌粮不但能杀灭当代害虫,而且能完全控制子代的发生。
- The results showed that the acute contact toxicity and acute oral toxicity of nine pesticides containing avermectin or emamectin benzoate were high to honey bees. 结果表明:所有含阿维菌素或甲氨基阿维菌素苯甲酸盐的农药对蜜蜂的急性接触和摄入毒性均为高毒。
- Extraction of insecticide constituents from Trigonella foenum-graecum L.by supercritical fluid CO_2 extraction(SFE-CO_2)method was optimized and the contact toxicity of extracts to Rhyzopertha dominica Fabricius were assayed. 对胡芦巴Trigonella foenum-graecumL.;中杀虫活性成分进行超临界CO2萃取分离;并以主要储粮害虫谷蠹Rhyzopertha dominicaFabricius为对象;对其触杀活性进行研究。
- The factory had been sending out toxic fumes. 这家工厂一直在排放有毒的废气。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- Beware how you handle the toxic chemical. 小心处理有毒的化学药品。
- Contact with acids liberates very toxic gas. 与酸接触释放出极高毒性气体;
- That poor madam has lost all contact with reality. 那位可怜的夫人脱离了现实生活。
- For further information, contact your local agent. 要进一步了解情况,请与本地代理商联系。
- A toxic chemical or other substance. 有毒的化学品或其它物质
- Have the children been in contact with disease? 孩子们同这种疾病有过接触吗?
- Contact with acids liberates toxic gas. 与酸接触释放出有毒气体;
- Helping a caller to contact somebody by phone. 帮助打电话者同某人电话联系。
- The degree to which a substance is toxic. 毒效一种物质毒性所达到的程度
- I came in contact with her by telephone. 我和她通过电话联络。
- A poor contact causes power to fail occasionally. 接触不良有时会造成断电。
- Do you have soft contact lens care product? 有没有软性隐型眼镜保养用品?
- I have a useful contact in New York. 我在纽约有个有用的人可以联系。
- Toxic by inhalation and in contact with skin. 吸入和与皮肤接触是有毒的;
- They made contact with headquarters by radio. 他们用无线电跟总部联络上 了。