以原油产量增量变动为标准，应用马尔可夫链对原油产量进行了预测，为油田生产决策提供依据。
In order to provide reference for production decision the paper takes the increment change of crude oil production as a foundation and predicts the crude oil production by using Markov Chain.
根据1970-1995年长江口中华绒螯蟹蟹苗捕捞情况、产量统计和1996～1998年长江口中华绒螯蟹蟹苗的调查资料，对蟹苗的分布和数量变动进行了分析研究。
The abundance and distribution of Eriocheir sinensis in the mouth of Changjiang River were studied through its occurrence, statistic data from 1970 - 1995 and investigations from 1996 -1998.
根据1970-1995年长江口中华绒螯蟹蟹苗捕捞情况、产量统计和1996～1998年长江口中华绒螯蟹蟹苗的调查资料，对蟹苗的分布和数量变动进行了分析研究。
The abundance and distribution of Eriocheir sinensis in the mouth of Changjiang River were studied through its occurrence, statistic data from 1970 - 1995 and investigations from 1996 -1998.
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