1) Radial variation in bamboo density
竹材径向密度变异
3) Radial variation
径向变异
1.
Totally 26 provenance stands of 17-year-old Pinus koraiensis were selected for investigating genetic variation in different provenances and the trend of radial variation of wood quality in the direction of cone to tree bark.
对帽儿山地区 1 7年生 2 6个红松种源试验林进行了材质性状研究 ,主要包括材质性状在不同种源间遗传变异情况以及从髓心到树皮径向变异模式研究。
2.
8% radial variation of the growth ring width were resulted by climate change from April of the previous year to September of the same year.
应用响应函数分析方法研究了东北地区人工林红松生长轮宽度对月平均气温等气候因素变化的响应,结果表明:前一年4月到当年9月的气候变化对人工林红松生长轮宽度径向变异可产生40。
5) radial density gradient
径向密度差
1.
According to theoretical analysis and experimental results,effects of a new centrifugal casting technique used in the preparation of shaped charge of composite B on the decrease of radial density gradient were described.
文中根据理论分析和实验结果，阐述了Ｂ炸药采用离心注装新工艺制备聚能装药时，对减小径向密度差的作用。
6) apex seal material
径向密封片材料
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