以上来源于: WordNet
A systematic investigation was made of the aphid populations and their bio-distribution on spring-sown maize plants in 1998~1999 in the suburbs of Chongqing.
对重庆市郊区1998年至1999年春玉米上蚜虫种群的发生情况进行了系统调查。
Fabricating the nanoporous silicon membrane with nanotechnology and Bio-MEMS technology, the thickness of membrane, pore size and distribution, geometry shape and porosity can precisely controlled.
采用纳米技术和生物微电子机械系统技术制备纳米多孔硅膜，可准确控制膜的厚度、几何形状、孔大小、孔分布和孔隙率。
The distribution of bio-mass and density is extremely uneven, but both of high biomass and high density were basically similar, in the area northen to Changjiang River estuary.
生物量和栖息密度的分布极不均匀，高生物量和高栖息密度的分布趋势基本相似，两者都在调查区的北部。
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