当您登录并分配到一个用来键入的终端设备(该终端成为Shell的标准输入)时，您将被指定为该设备的所有者，而tty成为组所有者。
When you log in and are assigned a terminal device to type in (the terminal becomes standard input for your shell), you're made the owner of the device, and tty becomes the group owner.
移动终端的速度对有效的切换、高效的动态信道分配、自适应调制、功率控制、均衡等无线应用都是必不可少的信息。
The knowledge of the velocity of the mobile terminals is essential in adequate handoff control, efficient dynamic channel assignment, adaptive modulation, power control, equalization, etc.
中心配线箱将线路分配到各区域分线箱后再到各楼栋分线箱，楼栋分线箱将线路分配到每个用户家中的终端盒。
Center line wiring boxes will be distributed to the regional lines to the box after box Advantage lines. Advantage lines boxes will be assigned to each user lines of Terminal box.
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