1) density calibration
密度标定
2) density scale
密度标度
3) Determination of standard stand density
林分标准密度确定
4) Standard density
标准密度
1.
The Aplication of crude oil standard density based on BP Netwok
BP神经网络在原油标准密度计算中的应用
2.
The result of compaction degree evaluation are easily achieved by standard density of laboratory Mashell test density, max theory density takes second place.
应用3种不同的标准密度计算沥青路面的压实度,由于标准密度的不同,压实度评价出现不一致的结果。
5) marker density
标记密度
1.
The precision of the prediction, indicated by the correlation with the unknown actual genome size from donor, was formulated by the variance and expressed as a function of the marker density.
预测的精确度则用有关方差的公式，以供体的实际片断大小（ｙ）与根据标记基因型预测的供体片断大小（ｙｐ）的相关表示，并表达为标记密度的函数。
2.
Using Monte Carlo method, the effects of marker density on the accuracy of QTL mapping, measured with mean squared error (MSE) of QTL position estimates, were investigated for a granddaughter design under different population structures,heritabilities, sizes of QTL effect and QTL locations.
采用蒙特卡罗方法分析了在孙女设计中不同的群体结构、性状遗传力、QTL效应大小和QTL在染色体上的位置等各个因素不同水平组合下4种标记密度（标记间隔5cM，10cM，20cM和50cM）对QTL定位精确性（以均方误MSE为衡量指标）的影响，并从经济学角度探讨了应用于标记辅助选择（MAS）的QTL定位的最佳标记密度。
3.
It was important to ensure the effect of QTL mapping by increasing marker density in a certain extent,but as the map distance between two adjacent markers reach to a certain degree(5~10 cM),it could not improve the result of QTL mapping by further increasing marker density.
采用计算机模拟方法系统比较了目标数量性状的遗传力和标记密度对F2设计下单个性状数量性状座位(QTL)区间定位效果的影响。
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。
参考词条