如使用不合格的代用品，会导致机械设备事故，直至损坏设备机件，影响安装生产。
If use unqualified substitute, can lead to mechanical equipment accident, until the damaged equipment parts, affect production installation.
对机械设备的运行状态、维修周期的正确预测有助于避免恶性事故的发生，并能节约维修费用。
The accurate prediction of running status and maintenance interval for mechanical equipment is important for avoiding serious accident and saving maintenance cost.
船舶主机和辅机等机械设备的机体裂纹是非常危险的缺陷，裂纹延展会导致机器报废或发生严重事故。
Cracks on engine bodies, no matter main engine or auxiliary one, are very dangerous defects, extension of which will lead to the engine discarded or serious accident.
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