1) covered soil density
覆土密度
1.
The research results of the effect of covered soil density on reducing radon emanation rate are introduced.
介绍了覆土密度对降低氡析出率影响的试验研究结果。
2) density of the covered ice
覆冰密度
3) coverage density
覆盖密度
4) covering soil depth
覆土厚度
1.
The research showed that the plant biomass increased with the covering soil depth,whether inoculation or not.
结果表明,无论接种与否,植株的生物量都随覆土厚度增大而增大;接种菌根处理中,植株地上部Cr、Cd、Pb等重金属元素的含量比对照处理均有明显降低。
5) height to earth up
覆土高度
6) Covering depth
覆土深度
1.
in the Ziwu Mountains od Gansu Province to different soil water contents(15 %,20 %,25 %,30 %,35 %,40 % and 45 %,respectively) and covering depth were investigated by laboratory tests and field experiments.
研究了子午岭林区内油松种子的萌发和幼苗出土对土壤水分和覆土深度的响应机理。
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