- 推荐网络例句
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According to Vaclav Smil, author of the book "Enriching the Earth", to replace existing synthetic fertiliser with manure would require quintupling the world's cattle population from 1.3 billion to maybe 7 billion-8 billion; where are these to graze?
肥沃我们的地球》一书的作者法克拉夫·施米勒说,如果用粪肥取代目前使用的复合肥,则世界上牛的数量将从目前的13亿头增加到五倍,及70到80亿头,我们到哪去饲养这些牛呢?
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Five days following hormone additions, we obtained transverse sections of mid-stems of A. anomala and S. variegata and analyzed aerenchyma formation using E80i Nikon microscope, ACT-2U and Simple PCI software.
处理5 d后,采用切片法制备其茎中部横切面切片,用E80i Nikon显微镜进行观察,并运用ACT-2U和Simple PCI软件分析野古草和秋华柳茎中通气组织的形成情况。
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Compared with diploidy seedlings of P.elongate,leaf length and stomata size of tetraploid becomes bigger,the leaf length/width ratio and stomata density becomes smaller.
变异植株叶片比二倍体大,叶片长宽比变小,叶片单个气孔变大,气孔密度变小。