Motivated by the filter reconstruction and vanish-momentconditions, a general construction approach based on the state equation was proposed for linear time-invariant systems.
阐述了一种利用消失矩条件和线性时不变系统的状态方程来构造小波的方法。
2
The best source of information for the moment is a theoretical model of where the cloud might be, taking into account the prevailing wind and other weather conditions.
考虑到盛行风与天气条件，目前最好的信息来源是尘用埃云的理论模型测定云层位置。
3
The timing of Visa's impending IPO is perhaps a sign that the firm believes that market conditions will not improve, but for now the IPO itself is a rare moment of light amid the gloom.