The extreme conditions of yield condition and yield function are discussed; and a velocity equation is established under the condition that noflow rule has been required.
对屈服条件与屈服函数的极值条件进行了讨论，在不需要流动法则的情况下建立了速度方程。
2
Under the condition of having no project, we need forecast the flow direction and quantity of the supply of goods in the hinterland in the same period.
无项目情况的确定则是在不建设该项目情况下，对同期内货源的流量流向情况进行预测。
3
This paper proves that there is no instable flow in the bottom outlet works in Lijiaxia Hydroelectric station and the instable flow in the several models is caused by the modeling condition.