The J2EE specification now states that an application can only have a single active (not closed) Session per Connection.
J2EE 规范现在规定一个应用程序中，对每一个 Connection 只能有一个活动的（未关闭） Session 。
"It is impossible to discover from the specification what relative dimensions of the shaft, deflecting member and closed container, will satisfy the requirements of the invention".
从这份专利说明书中不可能发现该发明所需的有关竖井、偏转装置和密封容器的相关尺寸。
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