Insects would make it impossible for us to live in the world; they would devour all our crops and kill our flocks and herds , if it were not for the protection we get from insect - eating animals.昆虫会使我们无法在这个世界上生存: 如果不是由于...
The salt content was estimated through ashing salted and demineralized whey powder or its solution.含盐乳清粉、脱盐乳清粉或乳清溶液,其含盐量都可以用灰化法测定.Wet ashing and flame atomic absorption determination of Ca, Mg and Fe have been studied.本文...