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英文论文写作常用句子
文/ 佚名 出处:不详 人气:   2007-3-17
d to span broad activities and require consideration of multiple aspects.l     Remedy / solve / alleviate these problemsl     ... is a difficult problem, yet to be adequately resolvedl     Two major problems have yet to be addressedl     An unanswered questionl     This problem in essence involves using x to obtain a solution.l     An additional research issue to be tackled is ....l     Some important issues in developing a ... system are discussedl     The three prime issues can be summarized:l     The situation leads to the problem of how to determine the ...l     There have been many attempts to l     It is expected to be serious barrier to l     It offers a simple solution in a limited domain for a complex problem.l     There are several ways to get around this problem.l     As difficult as it seems to be, xx is by no means new.l     The problem is to recognize xx from a design representation.l     A xx problem can trace its roots to xx.l     xx [1987] used a heuristic approach to simplify the complexity of the problem.l     Several problems are associated with them.l     Although some progress has been made in this area, at least two major obstacles must be overcome before a fully automated system can be realized.l     Most problems in practice are complicatedl     More problem surface here.l     Hamper effort toward a xx systeml     In order to overcome the limitations due to incomplete and imprecise xx knowledge, a xx program has been developed, which bases its knowledge upon the statistical analysis of a sa

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