除草剂

OTTAWA, Dec 3 - The widely used weed killer atrazine affects the sexual development of frogs, raising questions about the effects of its use in the environment, the University of Ottawa said on Thursday.

渥太华大学周四报道，被广泛使用的除草剂莠去津会影响青蛙的性发育，这引起了人们关于它的使用对环境的造成影响的问题的研究。

On the basis of basin-planting experiment, the tests have contrasted the control ratio of 10 kinds weed killer to Murdannja keisak, and have analysed the relation of control ratio and paddy output.

在盆栽试验的基础上，研究了10种除草剂对疣草的防除效果，分析了防除效果与水稻产量的关系。

A colorless salt (NaClO3) used as a weed killer and an antiseptic.

一种无色的盐，用作除草剂和防腐杀菌剂。

A selective weed -killer,ie one that kills weed s but not other plants

选择性除草剂(专除杂草而不伤及其他植物的)。

OTTAWA, Dec 3 - The widely used weed killer atrazine affects the sexual development of frogs, raising questions about the effects of its use in the environment, the University of Ottawa said on Thursday.

本周四渥太华大学报道，除草剂的广泛应用影响了青蛙的性别发育，引发了它的应用对于环境的影响。

So far this year, the U.S. Department of Agriculture has approved nearly 100 lest plantings of crops that have been genetically altered to give them traits such as pest resistance and tolerance to weed killer s

到今年为止，美国农业部已经批准了近100项实验作物栽培，这些作物通过改变基因而具有了诸如抗虫害和和除草剂等特性。

OTTAWA, Dec 3 - The widely used weed killer atrazine affects the sexual development of frogs, raising questions about the effects of its use in the environment, the University of Ottawa said on Thursday.

渥太华12月3日广泛使用除草剂&阿特拉津&影响青蛙性发育，提高其使用对环境的影响问题的重视，渥太华大学周四表示。

Thanks to the adamantine efforts of álvaro Uribe, Colombia's president, which included spraying hundreds of thousands of hectares with weed killer, the recorded area of coca seemed to fall by more than half between 1999 and 2006, according to United Nations estimates.

据联合国估计，由于哥伦比亚总统阿尔瓦罗？乌里韦的不懈努力，数十万公顷的土地被撒上除草剂，这些土地的可卡因产量在1999-2006年间一落千丈，一度不及原先产量的50%。

The organic agriculture is one kind completely does not use the chemical fertilizer, chemistry agricultural chemicals and the weed killer cultivation way, not only may the production safety, the high quality product, simultaneously be able to maintain the natural ecological equilibrium, achieves the environmental protection and the resources circulation goal.

有机农业是一种完全不用化学肥料、化学农药与除草剂耕作方式，不仅可生产安全、优质的产品，同时得以维持自然生态平衡，达到环境保护与资源循环的目的。

Goal: To obtains the compound quantum chemistry parameter using chemistry software computation, carries on the structure analysis to this kind of weed killer member, theoretically explained that this kind of compound biology characteristic and the structure relations, for this kind of compound's activeness, the toxicity predict that action mechanism's research provides the rationale.

目的：通过利用化学软件计算得到化合物的量子化学参数，对该类除草剂分子进行结构分析，从理论上解释该类化合物生物特性与结构的关系，为该类化合物的活性、毒性预测，作用机理的研究提供理论基础。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了