expends

it is useful to identify the mechanics parameters based on three dimensional numerical model for large cavern group project, but the three dimensional numerical simulation expends too much time and the solution is easily confined to local least, so that the traditional optimistic methods are limited.

对于大型洞室群工程，基于三维数值模型进行力学参数识别具有重要意义，但三维数值模拟正算过程需消耗大量时间，且解容易限于局部最小，传统优化方法受到限制。

Answer: before rural tax expends reform, farmer burden basically adopts the measure that land tax person expends; the crop crop that the production on land basically contracts according to the farmer after reform collects agricultural duty to reach its to add.

答：农村税费改革前，农民负担主要采取地税人费的办法；改革后主要根据农民承包土地上生产的农作物产量征收农业税及其附加。

Customer degree of satisfaction index has expended and the commodity and the service take the market in which expends as the object, quantification each kind of type and each level customer satisfies the appraisal, thus obtains one comprehensive economic indicator.

顾客满意度指数是以市场上消费过和正在消费的商品和服务为对象，量化各种类型和各个层次的顾客满意评价，从而获得的一种综合性经济指标。