The cuticular penetration ability of avermectin Bia to Helicaverpa armigera Hubner were studied by using HPLC.本文报道用高效液相色谱法来测定复配剂及各复配单剂对棉铃虫幼虫的表皮穿透能力.Our aim is to achieve greater market penetration.我们的目标是进一步打入市场.The trade...
The floor is sealed to prevent water penetration.地板加了密封涂料防止渗水。Our aim is to achieve greater market penetration.我们的目标是进一步打入市场.It is important to get even distribution of water and good penetration.灌水时水量均匀分布和充分渗透是很重要的....
He harvested rewards in fame and wealth for his successful experiment.他因试验成功而名利双收。Wealth is the test of a man's character.财富是对一个人品格的试金石。As a member of the nobility,his life had been one of wealth and privilege.身为贵族中...
Emboldened by the wine, he went over to introduce himself to her.他借酒壮胆，走上前去向她作自我介绍。His success emboldened him to expand his business.他有了成就因而激发他进一步扩展业务.This emboldened me to ask for more help.这使我更大胆地开口请求更多的帮助....
在相同的条件下,分子速度分布在任何时候都是恒定的.At any given instant the distribution of molecular speeds is always constant under the same conditions.它使火车在通过现有轨道的弯曲处时得以保持恒定的车速。It allows the train to maintain a constant speed through the twist...
The committee's confrontational style of campaigning has made it unpopular.委员会咄咄逼人的宣传方式使其不得人心。He has also dared to take unpopular, but principled stands at times.他有时也会大胆坚持不受欢迎、但却有原则性的立场。Taxes are unpopular — it is u...
存在着许多势能和动能的能源.There exist many sources of energy both potential and kinetic.最大势能和总能量是 多少 ?What are the maximum potential energy and the total energy?因此,我们可以说,该系统有内势能.We can therefore say that the system has internal pote...