Encapsulation is needed to allow several instances of the same widget to be open on the page without resource clashes.
要让同一个小部件的几个实例在相同的页面上打开并且不出现资源冲突，那么必须使用封装。
Note that without resource considerations, the length of time through the critical path is nine days (longest time through the various sequential steps).
注意到如果不考虑资源，通过关键路径的时间是9天(通过各种各样顺序排列的步骤所需的最长时间)。
Note that without resource considerations, the length of time through the critical path is nine days (longest time through the various sequential steps).
注意到如果不考虑资源，通过关键路径的时间是9天(通过各种各样顺序排列的步骤所需的最长时间)。
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