Clearly mark safe working load on the air winch below the rig floor 表明钻台底下气动绞车的安全工作负荷
2.
Swl : safe working load 安全工作负荷
3.
Safe working load 安全工作负荷
4.
Scaffolds should have their safe working loads posted or visible to those working who will be performing work on the scaffold 脚手架上应该悬挂安全工作负荷的标语/标识,其位置应该便于让在脚手架上工作的人看清。
5.
Careful consideration should be given to the weight of material and equipment to be lifted by cranes so that the safe working load of the crane is never exceeded 必须慎重考虑准备用吊车起吊的材料和设备的重量,决不可超过吊车的安全工作负荷。