The replacement of computer design drawing to the hand work drawing is the epochal conversion of engineering design. By taking reasonable course system, cultivate the computer drawing ability and synthesis ability, improve the integrated diathesis of students. 计算机设计绘图替代手工设计绘图是工程设计划时代的转变,采用合理的课程体系,可以培养学生的计算机绘图能力及综合应用能力,提高学生的综合素质。
Paying off, taking up and arranging actively with frequency conversion control of rewinder solve the problem of low speed by the means of paying off passively and taking up by moment motor. 变频控制打轴机的主动放线、主动收线和排线,解决了传统打轴机因被动放线或力矩电机收线而速度低的问题。
For the case of shallow lattice, we give the dependence of the atom-to-molecule conversion efficiency on the tunneling strength and the atomic interaction by taking a double-well as an example. 对于浅势阱情形,以双阱系统为例,我们给出原子-分子转化效率对跃迁强度和原子间相互作用强度的依赖关系。