2. In practical application, robots often need jumping devices to
overleap obstacles or ditches.
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机器人在实际应用时,很多时候要求其具备弹跳装置以便跃过障碍物或沟渠。
3. Hand wheel, lever and spanner driving and safety valve, pressure reducing valve, traps
overleap this symbol.
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手轮、手柄和扳手传动以及安全阀、减压阀、疏水阀省略本代号。