麦管

Although the reasonable biodiversity in wheat fields could control the population of wheat aphid effectively, but the spatial distribution did not change.

麦田合理生物多样性可以有效控制麦长管蚜种群的增长，但并不能改变其种群格局的变化趋势。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。