He loved watching the birds we attracted to our yard with numerous feeders and birdbaths.它喜欢观看我们用无数喂食器和鸟澡盆吸引到院子里的鸟.Textured materials appropriate for birdbaths, streams , and pools include sand, stones , pebbles, and con...
冲击波前方的熵密度是恒定的.The entropy density is constant ahead of the shock.熵的任何反向变化都是不合理的也是不可能的.The reversal of any entropychanging transformation would be neither reasonable nor possible.温熵图是一种热力学图,特别适合于描述大气过程.The tephigram is a ...