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画出正确的受力图是解决工程力学问题的关键步骤,没有正确的受力图,就不能解决后面的其他力学问题。且画受力图是《工程力学》中较难的课题之一,需要较多的基础知识,需要学生有较强的空间想象能力、动手实验能力和丰富的生活经验。
Drawing the right stress map is the key step to solve the problem of engineering mechanics. Without proper stress map, other mechanics problems behind can not be solved. Drawing the force map is one of the difficult topics in Engineering Mechanics. It requires more basic knowledge and requires students to have strong spatial imagination, hands-on ability and rich experience in life.