The pipe should be bent with electric bending machine or manual pipe bender.
用电动弯管机或手动弯管器弯管。
The paper, based on scientific research practice introduces an electric control principle on automation production line, which is applied to production of pipe bending machine.
结合科研实际，介绍了一种适用于弯管机生产的自动化生产线的电控原理。
The paper, based on scientific research practice introduces an electric control principle on automation production line, which is applied to production of pipe bending machine.
结合科研实际，介绍了一种适用于弯管机生产的自动化生产线的电控原理。
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