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- natural population fluctuation 自然数量消长
- Relationships of bee population fluctuation and distribution with natural environment in Anhui Province. 安徽省蜜蜂种群消长及其分布与自然环境的关系
- Population fluctuation of aphids on crucifer vegetables in Hangzhou suburbs. 杭州郊区菜蚜种群的数量消长规律。
- Study on the Natural Population Life Table of Pyla sp. 喜树幽斑螟自然种群生命表的研究。
- Bionomics of Perissopneumon xyliae and life tables of its natural population. 云龟履硕蚧的生物学及其自然种群生命表。
- In conclusion, the lower temperature condition was the key factor resulting in the seasonal population fluctuation of B. dorsalis in Liuku, Yunnan. 综合分析认为，低温是导致六库桔小实蝇季节性发生的关键因素。
- The solution of this model is asymptotically stable and tends to the steady state of the Solow model with zero population fluctuation on the economic growth is discussed. 通过引入变动人口增长率;讨论人口过渡时期和人口波动对经济增长的影响;并给出数值计算结果.
- The natural population growth rate dropped from 14.39 per 1,000 to 11.21 per 1,000. 人口自然增长率由14.;39‰下降为11
- With the natural population growth rate down to 6.45, China has entered a new period of low and stable birthrate. 人口自然增长率降到6.;45‰，进入了稳定低生育水平的时期。
- In 2001,the natural population growth of ethnic minorities was 13.04‰,whereas that of the Han was 8.25‰. 2001年少数民族人口自然增长率为13.;04‰，汉族为8
- The natural population growth rate was 10.06 per thousand,lower than the planned target of 11.44 per thousand. 人口自然增长率1.;006%25，低于 1
- Since 1970,the birth rate and natural population growth have both been above the average national level. 1970年以来，西藏的人口出生率、自然增长率均高于全国平均水平。
- This paper studied the species,field distribution,parasitic rate and population fluctuation of tachinid flies on meadow moth in Kangbao by rearing in laboratory and investigating in field. 通过室内饲养,结合历年田间调查对康保县草地螟寄生蝇种类、田间分布、寄生率及消长规律进行研究,结果表明康保县草地螟寄生蝇发生种类有5种。
- EXPERIMENT ON NATURAL POPULATION VARIATION OF PULPING PROPERTIES AND PULPABILITIES OF PINUS MASSONIANA LAMB. 马尾松制浆造纸性能的群体变异及适应性试验。
- CYTOLOGICAL STUDIES OF AN UNEQUAL BIVALENT IN A NATURAL POPULATION OF THE GRASSHOPPER, CATANTOPS BRACHYCERUS WILL. 短角斑腿蝗(Catantops brachycerus Will.;)自然群体中不等双价体的细胞学研究
- The natural population growth rate was 10.06 per thousand, lower than the planned target of 11.44 per thousand. 人口自然增长率1.;006%25，低于 1
- These tools were used to do study on life table of natural population of Anopheles sinensis. 应用这些工具进行了自然界中华按蚊种群生命表的研究。
- IPPF has made breakthrough progress in the natural population growth rate year after year to control less than 7 ‰. 计生工作取得突破性进展，人口自然增长率连年控制在7‰以内。
- RAPD Analysis for Natural Population Genetic Structure of Carya dabieshanensis[J]. 引用该论文 郭传友;黄坚钦;王正加;方炎明.
- Construction and Analysis of the Natural Population Life Table for Continuous Generation of the Diamondback Moth, Plutella xylostella L. 小菜蛾自然种群连续世代生命表的组建与分析。
