Preliminary investigation on the insects background provided a scientific basis for further studying on the insects, making control objects and compiling the catalogue of insects from Zijin Mountain.
紫金山昆虫本底调查是一项基础工作，为开展紫金山进一步的昆虫研究，制定防治对象及编写紫金山昆虫名录提供可靠的科学依据。
The organic speciality distribution of ECBP21 provides preliminary information for further studying of its developmental role.
ECBP21组织分布特异性为进一步研究其在植物生长发育中的功能提供了初步信息。
Mathematical model of Absorbing Markov Chain is used in studying epidemiology. A preliminary analysis is given in the population life, structure of the population and the cause of death to the city.
文章在解决流行病的若干问题时应用了吸收马尔柯夫链数学模型，并对城市中人口寿命、人口结构状况及死亡原因进行了初步分析。
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