The move to cloud computing is creating headaches for SAPusers, who are struggling to get their heads around the complex licensing structure that a hybrid environment entails.
移入云计算给SAP用户制造了难题，他们都在为混合环境中限定的复杂许可而苦恼。
In the time of network computing, the difficult problems of software production are the insurable requirements, highly opened and complex of system environment.
在网络计算时代，软件生产所面临的难题是需求的不定性和系统环境的高度开放性、复杂性。
In pervasive computing environment, a single service is very difficult to meet the user's task needs, so its need to use service composition to complete the complex tasks.
普适计算环境中的单一服务很难满足用户的任务需求，需要通过服务的组合来完成用户的复杂任务。
The complex resources and tasks in Grid computing environment make it very difficult to validate the methods of resource management and task scheduling.
网格环境中的资源情况和任务情况异常复杂，难以用实验测试各种资源管理和任务调度方法的有效性。
Therefore it is difficult to solve practical complex engineering and scientific problems using BEM, especially in the PC computing environment widely applied in our country.
特别是在我国通常采用微机的硬件条件下，用边界元法求解比较复杂的工程与科学问题遇到很大的困难。
Therefore it is difficult to solve practical complex engineering and scientific problems using BEM, especially in the PC computing environment widely applied in our country.
特别是在我国通常采用微机的硬件条件下，用边界元法求解比较复杂的工程与科学问题遇到很大的困难。
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