求翻译：于实际工作与理论方面，边际贡献法是进行量本利分析的有效方法，边际贡献值是衡量开停工的标准，它对企业生产经营决策，提高企业经营管理水平具有重要的借鉴与参考价值。是什么意思？

Practical work and theory, the contribution margin method is an effective way for volume, profit analysis, contribution margin value is a measure of suspension of the standard, its production and business decision-making, improve enterprise management level is an important reference and the referenc

Practical work and theory of law, and the marginal contribution amount is the analysis of effective methods, contribution margin value is a measure of the standard, the suspension of the enterprise IT decision-making and to increase production and operation management level has important lessons to

In the practical work and the theory aspect, the boundary contribution law is carries on the effective method which the quantity principal and interest analyzes, the boundary contribution value is weighs the work suspension the standard, it produces the management decision-making to the enterprise,

In practical work and theoretical aspects, marginal-cost-profit analysis of the contribution method is an effective method, marginal contribution value is a measure of open-work standard, enterprise production management, improve enterprise's management level is of great reference and reference valu

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