因为服务器可以是任意数量不同的平台，我们应该预计到客户机和服务器之间的体系结构差异。
Because our server could be on any number of different platforms, we should expect architectural differences between the client and the server.
当管理层了解了预计的对实际的易变率时，就能够评估与计划的差异，并且设法控制正要脱离控制的项目。
When management has an understanding of predicted versus actual volatility, it is able to assess variance from plan and take steps to rein in projects that are heading out of control.
术后实测肺功能与预计值相比较差异有显著性（P<0.05）。
Results The pulmonary functions observed were significantly decreased after the surgeries(P<0.05), and they were also significantly different from what was expected(P<0.05).
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