作为区域性无线转接交换机，MSC允许运营商停止对多机间中继线（inter-machine trunk）的依赖，从而减少MSC路由解析的成本。在长途业务方面，运营商可通过将长途业务卸载到自己的IP网络上，便可绕过TDM设施。
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Inter-Machine Trunk 多机间中继线
Inter-Machine Trunk IMT 机器间干线
Sell Trunk Wire Rewinding Machine 象鼻式收线机
Trunk Test Machine 皮箱检测实验机
The antitank SPG-9 "Kopyo" (" Spear ") grenade machine is not an automatic but recoilless gun. It consists of a trunk with a lock, a tripod stand and an electric mechanism which serves for firing.
这种反坦克spg - 0“Kopyo ”飞弹机是非自动无后座力炮，包含一个带锁箱，一个三脚架和一个开火用的电气机械装置。
In the process of spiraling climbing around the trunk, the pruning machine is pruning by chain saw.
整枝机在绕树干螺旋上升的过程中利用链锯进行整枝。
The resistance training group did the exercise on the instrument and training machine for the muscle group in trunk and upper and lower limbs.
抗阻训练组应用器械和在训练机上进行躯干及上下肢大肌群的练习。
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