Is tenability human body normal what is visual vitamin?

可维持人体正常视觉的维生素是什么？

Correct mattess should be tactility softness, tall flexibility, curve of physiology of tenability human body and permeability is good.

正确的床垫应该是触感柔软，高弹性，可维持人体生理曲线并且透气性好。

The tenability of "Walras's law" is the prerequisite of general equilibrium, and the tenability of the law is the result of the aggregate of individual budget.

“实物瓦尔拉斯法则”的成立是一般均衡存在的必要前提，而“瓦尔拉斯法则”的成立应当是个体预算约束加总的结果。

Opinions Vary about the theoretical basis for the tenability of the existing distribution relationship and there is no unified and scientific understanding of it.

对现存分配关系成立的理论依据，人们众说纷纭，缺乏一个科学统一的认识，因此，需要我们对经典作家的分配决定理论进行重新考察。

In recent years, some economists have begun to study the choice and arrangement of exchange rate regimes from the two angles of tenability and crisis prevention, …

近年来，经济学家开始从可维持性和危机预防的角度出发来研究汇率制度的选择和安排，汇率制度选择理论的研究也从静态视角转向动态视角。