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- In addition, S. guani could form field population in the poplar forest after it was released.Poplar longicorn was also sustained. 此外，肿腿蜂释放后可在杨树林间形成野外种群，并对杨树天牛具有很好的持续控制作用。
- Methods Adult mortality of Aedes albopictus , sensitive and field population collected from Guangzhou,was observed after ground ULV exposured to beta cypermethrin in laboratory and in field. 方法 在实验室、现场分别进行高效氯氰菊酯超低容量喷雾 ;观察对敏感白纹伊蚊及广州市城区白纹伊蚊成蚊的杀灭效果。 结果 在实验室测得高效氯氰菊酯当喷药量为 0 .;4ai·mg/m2 时;对广州市城区白纹伊蚊成蚊的致死率为96
- The field artillery pounded away at the for tress. 野战炮兵连续炮击那座要塞。
- STUDIES ON THE DYNAMICS OF FIELD POPULATION OF ROSE GRAIN APHID 麦无网长管蚜田间种群动态的研究
- The age models established by the growth ring and carapace length or carapace width predict that the large tortoise (carapace length>180mm) may exceed 24 years in field populations of Xinjiang. The expected longevity would be 28 years. 30:34(1991),成体龟数目远大于幼体龟的数目,利用年轮与背甲长度或体宽建立年龄模型,模型显示相同年龄的四爪陆龟,雌体生长速度大于雄体,通过年龄模型推测,背甲长度超过180mm的野生四爪陆龟的年龄可达24年,估计四爪陆龟的期望寿命为28年。
- In this paper, insecticide resistance and its mechanisms in field populations of adult B. tabaci in Fujian province of China were studied, in order to provide theoretical basis of IPM and IRM program of B. tabaci. 本论文以福建省不同地区烟粉虱田间种群为研究对象，从烟粉虱生物型鉴定、田间种群抗药性监测及抗药性机理、室内抗性选育及抗性机理等方面开展研究，为实施烟粉虱的综合治理和抗性治理提供理论依据。 主要研究结果如下：
- The crowd cheered as the teams entered the field. 球队入场时观众们为之欢呼。
- On the map the drains of each field are laid sown. 地图上标有每一块地的排水沟。
- Right-handed batters usually hit to left field. 右撇子击球手把球打到左外野。
- The runaway horse was cornered in a field. 那匹跑掉的马在田地里被圈住了。
- Tent is used by camper and by soldier in the field. 露营的人和战地的士兵用帐篷。
- The children had a field day with their new toys. 孩子们玩新玩具玩得十分开心。
- An oil well blew out in the oil field. 油田里有一口油井发生井喷。
- He is an adventurer in financial field. 他是金融领域的投机者。
- The castle frowned down upon the field. 城堡呈威压之势俯视原野。
- The peasants fertilize the field by using manure. 农民们施肥来使土地肥沃。
- The field of operations has been staked out. 军事演习的区域已经划定。
- They were pioneers in the field of microsurgery. 他们是显微外科学领域的创始人。
- A football field should be level. 足球场地应该平坦。
- He played the field academically. 他在学术上涉猎广泛。
