用吊车或卡车装卸货物时，货物和起重臂下不许站人。
When handling loads with cranes or trucks, caution crew members to stand clear of any overhead loads and boom.
吊物的摆动是影响吊车装卸效率的主要原因。
Generally, the loading efficiency of crane is mainly influenced by swing of hanging objects.
现场各类检查井盖板及暗沟盖板在预制场内预制，载重汽车运输、吊车装卸，人工辅助。
The scene each kind of inspection well lap and the blind ditch lap in prefabricate in the field to prefabricate, truck transportation, crane loading and unloading, artificial auxiliary.
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