The design methods for children stationery, the paper demonstrates enumerated instances of stationery design of practical function of the importance of children.
针对儿童文具的设计办法，文中少量罗列实例来论证明用性功用对儿童文具设计的重要性。
The new practical design method and design circuit for multi-state control of multi electric machinery are provided in this paper by using the method of logical function.
通过运用逻辑函数的方法，对多台电机多种状态控制线路提出了新型实用的设计方法及设计电路。
It is proved correct and practical to choose the meshing area as the objective function in the fuzzy optical design of ZC1 worm transmission in escalator.
实践证明，在自动扶梯zc1蜗杆传动模糊优化设计中，选择啮合面积为目标函数是正确的、可行的。
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