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1)  pine forest density
松林密度
1.
pitysophila damage to the pine forest could be controlled through adjusting the pine forest density;meanwhile,this paper found that the population density of the pine forest on the endroit was bigger than th.
通过对发生区内松林进行间伐、修枝等营林措施将郁闭度调整至0 5左右,松林中松突圆蚧的虫口密度从调整松林密度前的每束2 61头下降至0 63头,虫口密度下降75 86%,表明调整松林密度能有效地控制松突圆蚧对松林的危害;同时发现,阳坡上松林的虫口密度较阴坡上松林的虫口密度大,从阳坡向阴坡逐步过渡,松突圆蚧的虫口密度也随之下降,表明松突圆蚧的虫口密度与坡向有关,在景区绿化规划设计上应针对不同的坡向营造不同的树种,以防止松突圆蚧的发生和危害。
2)  apparent density
松装密度
1.
Effect of rod milling technique on apparent density of atomized iron powder;
棒磨工艺对水雾化铁粉松装密度的影响
2.
Optimization of particle size distribution for improving apparent density of iron powders used for warm compaction;
温压用铁粉松装密度的优化粒级匹配试验研究
3.
Influence of pH value and surfactant on apparent density of nano-scale nickel hydroxide;
pH值和表面活性剂对纳米氢氧化镍松装密度的影响
3)  bulk density
松装密度
1.
The effect of inoculating crystal and additive on particle size and bulk density of CeO2 was studied.
用碳酸氢铵作沉淀剂制备大颗粒CeO2,研究了晶种和添加剂对CeO2产品的粒度和松装密度的影响,适量加入晶种和添加剂可以促进CeO2颗粒的长大。
2.
Commercial BeO applicable for Be and Cu master alloy production is produced by control of operation and technical conditions of precipitation,alkali washing,and calcination and also by testing of technical data such as specific surface area,bulk density,and ignition loss,etc.
通过对工业氧化铍生产过程中的沉淀、碱洗、煅烧等工序的工艺操作和技术条件的调整控制,同时加强对比表面积、松装密度及灼失等技术指标的检测,产出的工业氧化铍能满足铍铜母合金生产的需要。
3.
The preparation of cerium carbonate product by cerium chloride and ammonium bicarbonate coprecipitation is studied,high bulk density cerium oxide has been obtained through cerium carbonate high temperature roasting.
研究了通过CeC l3与NH4HCO3共沉淀制备Ce2(CO3)3前驱体,Ce2(CO3)3经高温焙烧得到高松装密度CeO2。
4)  bulk density
松密度
1.
And to fulfill the high-load production after capacity expansion,it was necessary to properly increase the bulk density of the bed,ensure the residence time of the catalyst in the reactor,reduce the frequency of discharging and decrease unit consumption,so increasing the bulk density of the bed and stabilizing catal.
研究了生产全密度聚乙烯的M1催化剂的配制过程及原理,在冷凝态操作下,由于冷剂的存在对催化剂的活性有衰减作用,而且由于扩能后高负荷生产要求床层松密度适量提高,保证催化剂在反应器内的停留时间,减少出料次数,降低单耗,所以提高床层松密度、稳定催化剂活性成为稳定装置运行的重要条件。
5)  loose dry density
松干密度
1.
Effect of loose dry density on process of quality control of lime-soil;
松干密度的测定及其在灰土地基质量控制中的作用
6)  Loosing-density
稀松密度
1.
To maintain a good spread of solution in the population, the Loosing- density is defined and used in this algorithm,the fitness of the individual through Pareto strength and Loosing- density is also defined .
该算法定义和使用稀松密度来保持群体中个体的均匀分布,并将个体的Pareto强度和稀松密度合并到个体的适应值定义中,使得搜索向Pareto最优解集的方向进行并防止早熟;算法还采用多父体杂交策略,每代只产生一个新个体、淘汰一个最差个体,精英个体自动留存。
补充资料:非密度制约因素(见密度制约因素)


非密度制约因素(见密度制约因素)


  l焦非密度制约因素见生态因素、密度制约后
  
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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