Theoretical analysis and numerical calculations for three shells with scale ratio 1:2:3 show that if loss factor does not depend on frequency it has no influence on simil…
理论分析和对尺寸比1 ：2：3的三个壳体的数值计算表明 ：若材料损耗与频率无关 ，则损耗不影响相似性 ；
Simil ar to a widely reported relationship in natural size flocks of many species of birds, vigilance levels of the free individual eared pheasants declined as the extra-range flock size increased.
分离者的个体警惕水平随着临时群体大小的增加而下降，遵从在其它自然大小鸟类群体所发现的一般性规律。
Simil ar to a widely reported relationship in natural size flocks of many species of birds, vigilance levels of the free individual eared pheasants declined as the extra-range flock size increased.
分离者的个体警惕水平随着临时群体大小的增加而下降，遵从在其它自然大小鸟类群体所发现的一般性规律。
应用推荐