Production need to invest capital and labor, when the amount of capital investment remains the same, the only increase in labor input, output initially increases more, the future will be gradually reduced, finally to reach saturation, the labor input does not work.

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In the production needs the investment and the work, when invests when the capital quantity maintains invariably, solely increases the work the investment, at first increases delivers quite many, later will be able to reduce gradually, finally will be able to achieve saturated, the investment work w

Requires a commitment of capital and labour in the production, when the amount of capital inputs remain unchanged, just raise the labour inputs, initially increasing output more, will be gradually reduced and eventually becomes saturated, investment in labor doesn't work.

Production need to invest capital and labor when inputs of capital remain unchanged, increasing labour input, initially increased output more, will cut last is reaching into labor doesn't work.