机械制图这门课程在教材的一开始部分就把它的重要性凸显出来,它是用语言来进行交流的课程,如果机械制图学不好,那么进行机械上的沟通与交流就显得很无力。然而,对专业性特强的学科来说,必须要把它教好、学好,才能对学校、对学生、对社会及家长和用人单位负责。 Mechanical drawing This course highlights its importance at the outset of the textbook. It is a course in which language is used for communication. Mechanical mechanics and communication are weak if mechanical cartography is not good. However, for highly specialized disciplines, it must be taught and learned well before they can be responsible to schools, students, the society, parents and employers.