如果机器人有一个可动部分能做两个方向的伸展，该机器人必须在运做状态下接受检查。
If a robot has a moving part that extends in two directions, it will need to be inspected with this part operating.
该机器运行平稳易于操作伸展量大。
The machine is stable, easy to operate and can extend to a wide range.
该机器运行平稳易于操作伸展量大。
The machine is stable, easy to operate and can extend to a wide range.
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