Since the output of one industry (steel, for example) serves as an input for another (construction), one cannot solve any equation without solving them all simultaneously.
由于一个行业的产出总是会作为另一个行业的投入，因此除非能同时解出所有的方程，否则你一个也解不出。
Wave equation analyses have been widely used in the design and construction of pile foundation of offshore platforms in many countries.
近海石油平台的桩基设计与施工中，国际上业已广泛应用波动方程分析。
The prerequisites of construction of the assets equation is the estimation of the drift coefficient b(·).
资产方程中漂移系数和扩散系数的估计是建立方程的前提。
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