维护，修理和翻新住宅和磨房，矿山，医院，工厂等场所的木结构。
Maintain, repair and renovate residences and wooden structures in mills, mines, hospitals, industrial plants and other establishments.
预防性维护：维护和修理工厂设备，对设备和设施进行预防性维护。
Preventative maintenance: Maintaining and repairing plant equipment and performing preventative maintenance on equipment and facilities.
预防性维护：维护和修理工厂设备，对设备和设施进行预防性维护。
Preventative maintenance: Maintaining and repairing plant equipment and performing preventative maintenance on equipment and facilities.
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