The law of value is determined by socially necessary Labour time.

价值规律是商品价值由社会必要劳动时间决定的规律。

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In the history of economic thinking, William Petty is the first to realize that value originates from general Labour; namely, value is determined by Labour time.

在经济思想史上，威廉·配第是最先认识到价值起源于一般劳动，即由劳动时间决定价值的。

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Thanks to the advantageous CAD, product quality has been improved, labour, time and materials saved considerably and operational costs reduced.

提高了产品质量；节约了大量的人力、工时和材料，降低了成本。

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Thanks to the advantageous CAD, product quality has been improved, labour, time and materials saved considerably and operational costs reduced.

提高了产品质量；节约了大量的人力、工时和材料，降低了成本。

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