Methods used in the prediction of pore pressure can be classified into two groups-the method of trend line and the method of percentage of overburden.
用地震速度资料进行钻前地层压力预测，大体可分为趋势线法和支撑上覆岩层压力的百分比法。
This paper introduce the forecasting method of trend envelope totally, and based on the old data, the Heilongjiang Provice agriculture machinery total power prediction is carried on with the method.
文中对趋势包络预测方法进行了详细介绍，并应用此方法，依据历年的数据对黑龙江省农机总动力进行了预测。
Markov chains forecasting method could make probability prediction of MDM and could be a reference to long-term developing trend forecasting of this disease.
马尔科夫链预测法可对玉米矮花叶病发生程度作概率预测，可作为该病长期发生趋势预测预报的一个参考。
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