密度与穗粒数和千粒重均呈线性负相关。
Density is negatively correlated with number of kernel per ear and 1 000 grain weight.
结论：释药速率与离子强度之间存在较好的线性负相关关系。
CONCLUSIONS the rate of drug release is proportional to the ionic strength.
林分密度和受灾率及土层厚度和受害株数均呈显著的线性负相关；
The ratio of damaged trees was negatively correlated with stand density, soil depth and size class of diameter, and positively correlated with tree height.
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