网络例句
颤毛幼虫
- 与 颤毛幼虫 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Benthic macroinvertebrates were studied in 5 sampling sites. The results indicated the species were becoming little and little. We only inspected 2 species Tubifex sp and Tokunagayasyrida akamus, which are all eutrophicational designate species.
底栖大型无脊椎动物种类逐年减少的，2002年仅观测到寡毛类的正颤蚓和摇蚊幼虫类的大红德永摇蚊，它们均是富营养型水体的指示种类。
- 推荐网络例句
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It is also known as one of the most poisonous naturally occurring substances.
它也被称为一个最自然发生的有毒物质。
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The greatest stress is found at the location on the cross section where V is the largest.
最大应力出现在横截面上V为最大的地方。
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It is the most important three water problem which our country faces in the 21st century that flood and waterlog, drought and shortage of water, the deterioration of water environment.
洪涝灾害、干旱缺水、水环境恶化是二十一世纪我国面临的三大水问题。