数传机，数据通信中发送数据时把信号变换为适合于线路会传输入的信号，在接收时把来自线路的信号还原的设备。可分为有线数传机和无线数传机。
本文提出了一种并行体制无线数传机新的帧同步建立方案，并给予理论公式的推导。
In this paper, a new design of frame synchronization acquisition scheme in the high-speed multi-tone HF MODEM is proposed, and the theoretical formula of the design is derived.
一种从调制解调器(数传机)到数据终端设备(dte)的信号，用来表明它已就绪，等待操作。
A signal from a modem (data set) to a DTE indicating that it is ready to operate.
根据工效学实验的结果数据和飞行员的使用性评价意见，提出新型歼击机HUD数传指令显示的优化方案。
According to the experimental results and pilots'ratings, the optimized display schemes of HUD ground-air data transferring commands in new fighters were advanced in this study.
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