短期内, 那些变异体就会在以后的爆发中起主导地位.In short order, those strains become dominant in the next outbreak.而一旦分离出变异体, 对应的突变基因就可以鉴定出来了.Once mutants have been isolated, the mutated gene can be molecularly identified.果胶是由半乳糖变异体和葡萄糖变异体角素构成...
Why does a space shuttle get hotter on reentry than on liftoff?能想象航天飞机穿越大气层时受到摩擦产生的热量有多惊人吗?来一起听听 吧 .Was it really hotter, or was he weaker?是天气比往年热呢, 还是自己的身体虚 呢 ?Hotter water was also better at removing dog dander and pol...
采用热分析技术研究了两种海藻的热解特性.The pyrolytic characteristics of two seaweeds were investigated by thermogravimetric analysis technique.他用含有鱼和海藻的混合物给植物施肥.He fed the plant a mixture containing fish and seaweed.他晒黑的面孔呈现出一种海洋 、 高山和海藻的混...
Your intake of alcohol should not exceed two units per day.每天的饮酒量不应超过两个计量单位。Where payments exceed these limits they become fully taxable.付款额超过这些限度就得全部纳税.The speed limit is 40 miles an hour. Don't exceed this maximum...