The paper, based on the model of "block of time" cost calculator, makes a simple model to accommodate for the library practice of virtual reference services in our country.
在介绍“间隔时间”成本预算模型的基础上，对该模型进行简化，使其适合中国图书馆界虚拟参考咨询服务的实践。
The nonlinear dynamic correcting methods based on block oriented model are researched for the sensors based on oriented model with the nonlinear static characteristic of saturation in first quadrant.
针对以块联模型表示，且静态特性位于第一象限的饱和型非线性传感器，进行基于块联模型的动态非线性校正方法研究。
All the methods are based on economic block model of ore body built according to geological statistics theory.
这些计算机优化方法都是在应用地质统计学方法建立的矿床块段模型基础上实现的。
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