Engineers used the trial and error method in selecting the other colors.
工程师们在选用其他颜色是采用了反复试验、不断摸索的方法。
Based on the elastic theory, a set of matching equation of the contact displacements is solved by the trial and error method.
基于弹性理论，以试凑法求解一组接触面间位移的协调方程。
Based on the elastic theory, a set of matching equation of the contact displacements is solved by the trial and error method.
基于弹性理论，以试凑法求解一组接触面间位移的协调方程。
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