variable-pressure operation

At long prediction horizon, continuous predictor variable such as cash flow from operation becomes more important.

在较长预测区间内，持续预测变量例如企业经营活动产生的现金流更加重要。

The substitution of variable crown elevation tailrace tunnel for surge chamber not only can guarantee the safe operation of the powerplant and reduce the investment but also can avoid unfavorable influence of intensively distributed large span underground chambers on the stability of the surrounding rock mass.

用变顶高尾水洞取代调压室，既可保证电站的安全运行和减小工程投资，又避免了大跨度洞室群分布密集给围岩稳定带来的不利影响。

Remote Speed Control of Motor System with PLC and Variable Frequency Operation

利用PLC控制电机远程变频调速

An Analysis on the Variable of Macro-Economic Operation and Study on the Orientation of Policy in Hebei Province

河北省宏观经济运行变量分析与政策取向研究

In the course of calculating, the solution has nothing to do with the beginning value of the iteration, which is the constant term of the error equation, and the correlation coefficient of each variable won ′ t change after the variant weight operation.

在运算过程中，其解与迭代初始值无关，其迭代初始值为误差方程的常数项，并且能保持变权运算后各变量的相关系数不变。