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- drought disater control forest 防旱林
- Control forest moles were tested by biological sterile drug.The results showed pregnant rate of female nature mole was decreased 55%.More biological drug dosage the more effect. 通过生物性不育剂防治森林害鼠试验,结果表明,雌成年鼠怀胎率下降55%25,高投药量会得到高效。
- Brief on Mix Pesticide Control Forest Insect Pests 混合农药防治森林病虫害简介
- This paper deals with the control effect, the control cost per hectare, the ratio of investment cost and produce benefit of aerially controlling forest pests by Haiyan ultralight plane in contrast with other methods. 本文研究报道了“海燕”超轻型飞机同其它防治法防治森林害虫的防治效果、每公顷平均防治成本及投入产出比。
- The long drought famished many people. 久旱使很多人陷入饥饿。
- The crops failed because of the drought. 干旱造成农作物歉收。
- drought disaster control forest 防旱林
- The battle against drought was on. 抗旱的战斗在继续中。
- The drought withered the leaves. 乾旱使叶子枯萎了。
- The long drought scorched the grass. 久旱使青草枯萎。
- Right now there's a drought of adequate leadership. 眼下缺少能胜任的领导人。
- The scarcity of fruit was caused by the drought. 水果缺乏是由乾旱引起的。
- Industry rarely thrives under government control. 在政府控制之下工业很少会发达。
- Week after week the drought continued. 乾旱持续了许多星期。
- Famine is often the sequel to war or drought. 饥荒往往是战争或干旱造成的。
- The ground is as hard as stone after the drought. 长期乾旱之後土地硬得就像石头一样。
- Those rebellious teenagers are hard to control. 那些反叛的青少年很难管教。
- Pollution control has cleared the air. 污染管制已净化了空气。
- An ASCII control character, end of medium. 一种ASCII码控制字符,媒体结束符。
- The firemen were unable to control the blaze. 消防队员无法控制这场大火。