control density造句

natural growth and artificially controlled density growth models for cunninghamia lanceolata stand in huitong county, hunan province
杉木林分自然生长和人为控制密度生长模型研究
with the development of economy and the increasing of consumption of energy, people set up higher standards to environmental quality, the problem of atmospheric pollution is becoming more and more serious, the method of controlling density had n't adapted itself to the requirement of modern environmental management . then it is one of the most important projects of environmental science to seeking one new ideal path of controlling atmospheric pollution
长期以来，世界各国对于大气污染控制主要采用控制污染源排放浓度为核心的环境管理方法体系，但随着经济的发展和能源消耗量逐年增加以及人们对环境质量愈来愈高的要求，大气污染问题日益严峻，对大气污染采取浓度控制方法已不能适应环境管理要求，寻求新的大气污染控制的理想途径，是大气环境科学研究十分重要的课题。
It's difficult to find control density in a sentence. 用control density造句挺难的