而且，特别地，如果我们令此函数为零，而不是近似为零，它意味着我们在水平集的切平面上移动。
And so, in particular, if we set this equal to zero instead of approximately zero, it means we'll actually be moving on the tangent plane to the level set.
文档对数据传输协议和相关的通过S1接口建立用户平面传输承载的信令协议进行了详细的说明。
The present document specifies the standards for user data transport protocols and related signalling protocols to establish user plane transport bearers over the S1 interface.
本文将IP业务网络系统按照功能分为三个平面承载面、信令面和业务面。
IP-based service network is divided into three planes, bearing plane, signaling plane and application plane.
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