求翻译：无论规模收益递增还是规模收益递减，均表明港口存在规模不经济效应，有待进行规模完善，因此规模收益不变点才是企业经营的最佳规模。是什么意思？

Regardless of increasing returns to scale or diminishing returns to scale, indicate that the port the existence of diseconomies of scale effect, to be perfect scale, constant returns to scale the size of the point is the business best.

Increasing-returns, regardless of size or scale, diminishing returns are that port is not economic effect, yet to be perfected, So scale scale does not change from business is the best size.

Regardless of the scale income increases progressively or the scale income decreases progressively, indicated the harbor existence scale uneconomical effect, the pending carries on the scale to be perfect, therefore the scale income fixed point is the best scale which the enterprise manages.

Increasing returns to scale are decreasing returns to scale, show port scale economy effect, to be perfect scale, returns to scale variable points is the optimum size of the business.

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