pactpos=get_actual_tcp_pose()获取当前TCP姿态赋值给pactpos,
pactpos[2]≥0.185是啥意思
pactpos[2]≥0.185
is a comparative operation that compares the 3rd value of the TCP-pose (the Z-value) to a number (0.185).
This comparison returns true if the z-value of the pose is bigger or equal to 0.185