a由图2-12可以看出,在污泥驯化过程中,污泥浓度随着废水浓度的增加有些起伏变化。 2-12 may see by Figure, in sludge domestication process, sludge density along with waste water density increase some fluctuation change.[translate] a累的话就好好休息一下啊 The tired speech well rests[translate] ...
Define the term "exotic species" and use it in a sentence to demonstrate how it applies to biology. What causes variation in a species? To put this another way: all humans have the same genes, yet we do not look alike. What is the reason for the ...