“掌握力学原理,减少安全事故。”这话有一定道理。然而,人们在生活和生产中,并没有认识到这种需要的迫切性。某建筑工地工人从脚手架上摔下来,总结教训时,却说是“不小心”。深入分析,难道仅仅是不小心吗?有个工人在提升料盘上扛木头,他特别小心,然而没有掌握料盘滑摆能使人失去重心的力 “Grasp the principles of mechanics, reduce accidents.” There is some truth. However, people do not realize the urgency of this need in life and production. A construction site workers fell from the scaffolding, summing up the lessons, but said “careless.” Could it be mere carelessness to analyze it in detail? He was particularly careful when a worker carried the wood on the lifting tray, but did not grasp the force of losing the center of gravity