2. In practical application, robots often need jumping devices to
overleap obstacles or ditches.
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.
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。