Using EVA management mode, business management, add a new decision-making, discriminant index and tool, enterprise managers in many operating decision on the issue of vision will be more broad.

采用EVA的管理模式之后，企业的经营管理就增添了一种新的决策﹑判别指标和工具，企业经理人在许多经营决策问题上的视野将更加广阔。

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Meanwhile, a sand discriminant criteria specific for area deep gas reservoir is established on the basis of sand index, the critical production bell Aaron and the critical pressure parameters.

同时，建立了工区深气层出砂指数、斯伦贝尔比和临界生产压差等参数的临界出砂判别标准。

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