It is important to check that all mechanical and electric parts of the machine function normally so as to prevent machine damage and personal injury.

开机前必须检查各部份机械和电器是否正常，以免造成机器故障或人身伤害事故。

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It is important to check that all mechanical and electric parts of the machine function normally so as to prevent machine damage and personal injury.

开机前必须检查各部份机械和电器是否正常，以免造成机器故障或人身伤害事故。

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