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在对起重视进行现代化改造之前,性能价格比方面的分析曾经给过人们很多帮助。对每一个技术变动都要进行定量分析,以便能够得出最佳的工作范围。对技术状况进行核查,这有助于避免人力和物力的浪费。
The cost-to-performance analysis used to be a great help to people before they made any significant improvements. Each technical change should be quantitatively analyzed in order to be able to draw the best work scope. Verification of the state of the art helps to avoid the waste of human and material resources.