同时凯恩斯还认为，储蓄的钱也未必都能转化为资本。他是这样分析的，资本家

同时凯恩斯还认为，储蓄的钱也未必都能转化为资本。他是这样分析的，资本家在投资前需要进行两种预期。一种是价格预期，即产品的最终售价；一种是报酬预期，即投入资本所获得的最终报酬。这里涉及到一个概念叫作资本边际效率，即资本的预期收益除以资本的成本。随着资本的投资增加，人们对投资的预期收益会下降。同时，由于资本投资增加而来的需求增加，资本的成本也相应上升。在长期内，预期资本边际收益率递减是影响资本边际效率下降的主要因素；在短期内，资本的供给价格因需求增加而上涨时影响资本边际效率的主要因素。这两个原因阻止了人们进一步投资，使现有储蓄不能充分转换为投资，从而造成生产需求不足。

結果 (英文) 1:

Meanwhile Keynes also believed that saving money is not necessarily can be converted into capital. He was such an analysis, the capitalists before investing requires two types of expectations. One is the price expectation that the final product price; One is expected to pay, that invested capital obtained final reward. This involves a concept called the marginal efficiency of capital, ie, capital divided by the expected return on the cost of capital. With increased investment in capital, people expected return on investment will decline. Meanwhile, the increase in capital investment increased demand from the cost of capital also increased accordingly. In the long term,Diminishing marginal returns to capital ratio is expected to affect the marginal efficiency of capital is a major factor in decline; in the short term, the supply of capital due to increased demand and rising prices affect the marginal efficiency of capital is a major factor. These two reasons are prevented from being further investment, so that savings can not be fully converted to the existing investment, resulting in the production of insufficient demand.

結果 (英文) 2:

At the same time, Keynes also think, saving money is not all can be converted into capital. He is such analysis, capitalists need two expected before investment. One is the price, the final price of the product; one is the reward expectations, is put into final reward of capital institute. Here involves a concept called the marginal efficiency of capital, i.e. capital earnings divided by the cost of capital. With the capital investment increasing, people expected returns on investment will decline. At the same time, owing to the increasing demand to increase capital investment, the cost of capital is also a corresponding rise in. In the long term,The expected marginal return on capital is the main factor affecting diminishing decline in the marginal efficiency of capital; in the short term, the supply of capital prices due to increased demand and rising main factors influence the marginal efficiency of capital. The two reason prevents people from further investment, the savings can not be fully converted to investment, resulting in production to demand.

結果 (英文) 3:

While Keynes also believed that saving money is not always translated into capital. He was such an analysis, capitalists before investing requires two expectations. Is a price target, namely the final selling price of the product; a remuneration is expected, that eventually received for capital remuneration. Here involves a concept called marginal efficiency of capital, namely capital earnings divided by the cost of capital. As capital investment increases, the expected return on investment will decline. At the same time, increased demand due to the increased capital investment, capital costs are correspondingly increasing. In the long term,Diminishing marginal rate of expected capital is a major factor affecting the declining marginal efficiency of capital; in the short term, the supply price of capital rose due to increased demand for primary factors affecting marginal efficiency of capital. These two reasons prevented further investments to existing cannot be fully converted from savings to investment, resulting in insufficient production demand.