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。

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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。

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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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But demand is only part of the equation for the metal widely used in manufacturing and construction.

FORBES: Supply Pinch Could Prop Up Price Of Copper