lifting appliance造句怎么写

power-driven lifting appliance

Hatch covers handled with the aid of a lifting appliance shall befitted with readily access ible and suitable attachments for securing theslings or other lifting gear.

safety rules for lifting appliances

The traveling crane maintains rigidity restriction with the lifting appliance in rapid horizontal shift, thus avoiding free swing of the lifting appliance.

lifting appliance

survey of lifting appliances and lifting gear [public works category]