英语单词frass是什么意思?frass怎么读?frass怎么发音?英语网为您整理了frass的解释、用法、例句、词组等相关学习资料。下面跟小编一起来看看吧！
frass的意思
1、n.弗拉斯；蛀屑，幼虫的粪便
frass的双语例句
1、Frass Canyon. It's a joke.-You ever actually been in there?
富拉斯峡谷，那是个笑话-去过吗？
2、Frass of longhorned beetle larvae plays an important role in natural enemies searching for their cerambycid hosts.
天牛幼虫排出的虫粪所释放的挥发性物质成为天敌搜寻天牛所在微栖境的重要化学信息物质。
3、Field tests showed that females gnawed significantly fewer oviposition scars on Pinus massoniana trees treated with hexane extracts of larval frass than on the control trees.
林间驱避试验结果说明，幼虫虫粪的己烷提取物处理过的树干上的刻槽数明显少于对照树干上的刻槽数，二者具有极显著差异；
4、It was found that a water suspension or a hexane extract of the frass FA or FC, in contrast to the corresponding foods, significantly deterred oviposition of conspecifics.
结果表明两种粪便的水悬浮液和正己烷提取液对怀卵雌虫的产卵有显著的忌避作用，而人工饲料和棉叶的水悬浮液和正己烷提取液却引诱怀卵雌虫产卵。
5、When hexane extracts of the frass FA and FC were further partitioned into polar and neutral lipid fractions, two polar fractions and the neutral fraction from frass FC significantly reduced oviposition.
将两种粪便的正己烷提取液进一步分离为极性和中性脂类，两种粪便极性脂类和取食棉叶的幼虫粪便的中性脂类均显著的忌避怀卵雌蛾。
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