These methods were essential to the study on classification, identification and characteristics of the plant nematode.
这些方法对植物寄生线虫的分类鉴定和侵染特性研究具有重要意义。
The study on classification of urban green space provides a crucial technical support for urban green space system and implementing the classified management of green space.
城市绿地分类研究是绿地系统规划和实行绿地分类管理的重要技术支撑。
The study on classification and distribution of genus spiraea in Hebei province was carried out when the author compiled "Spiraea" in " Flora sh-rud Hebei" .
作者在编写《河北灌木志》绣线菊属时，对采于河北境内的本属植物标本进行了分类与分布研究。
This paper discussed the current status of the study on classification, modeling and prediction of forest fuel, and presented briefly the weakness and development tendency of the study on forest fuel.
文中评述了森林可燃物分类、可燃物模型及其预测研究的现状，并简述了我国森林可燃物研究存在的问题与发展趋势。
This paper discussed the current status of the study on classification, modeling and prediction of forest fuel, and presented briefly the weakness and development tendency of the study on forest fuel.
文中评述了森林可燃物分类、可燃物模型及其预测研究的现状，并简述了我国森林可燃物研究存在的问题与发展趋势。
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