您要查找的是不是：
- Diquat is a non-selective contact herbicide and desiccant, developed by ICI Plant Protection Division (now Zeneca Agrochemicals). 敌草快，是英国卜内门化学公司(现改名先正达化学公司)开发的非选择性接触除草剂和干燥剂。
- Phenylurea herbicide belongs to an important class of contact herbicides that have been used for pre- and post-emergence control of annual grass, and many broad leaf weeds in many crops acting by inhibition of photosynthesis. 苯脲类除草剂作为一类重要的除草剂,广泛应用于不同农作物的芽前和苗后的一年生杂草,特别是一年生宽叶杂草。
- Contact herbicides (e.g., sulfuric acid, diquat, paraquat) kill only the plant organs with which they are in contact. 接触型除草剂（如硫酸、大刈特及巴拉刈）只杀死接触到除草剂的植物器官。
- Chlorates are a group of toxic substances with significant ecological risk.Last century, sodium chlorate was used to be as non-selective contact herbicides and defoliant in agricultural history. 氯酸盐是一类毒性强氧化剂，上个世纪曾被作为非选择性除草剂和脱叶剂在农业生产中大量施用，近年来，氯酸钾作为龙眼产期调控剂也在反季节龙眼生产中大量应用。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- 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。
- Have the children been in contact with disease? 孩子们同这种疾病有过接触吗？
- Helping a caller to contact somebody by phone. 帮助打电话者同某人电话联系。
- I came in contact with her by telephone. 我和她通过电话联络。
- This herbicide degrades in moist soil. 这种除草剂在潮湿的土壤中分解。
- 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。
- They made contact with headquarters by radio. 他们用无线电跟总部联络上 了。
- Paraquat is an effective and widely used herbicide. 百草枯是一种高效能除草剂。
- Expedite offer afraid buyer ready withdraw as others contact him. 糨公司正与之接触，请速予报价，否则买主准备撤走。
- I've got a useful contact in the post office. 我在邮局有熟人。
- She hungered for some contact outside her own circumscribed world. 她渴望跳出自己的小圈圈与外界有所接触。
- No single herbicide will control all weeds. 单独一种除草剂决不能防除所有的杂草。
