| 交互式CAD系统屏幕菜单的实现 |
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| 引用本文： | 廖光寿,刘载文,邓娟,于峰.交互式CAD系统屏幕菜单的实现[J].北京工商大学学报(自然科学版),1989(2). |
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| 作者姓名： | 廖光寿 刘载文 邓娟 于峰 |
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| 作者单位： | 北京轻工业学院自动化工程系，北京轻工业学院自动化工程系，北京轻工业学院自动化工程系，北京轻工业学院自动化工程系 |
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| 摘 要： | 本文论述的交互式CAD系统屏幕菜单的实现方法,采用了矩阵技术、初始化方式,以及菜单调用、菜单交换、菜单显示等多层次结构。程序设计思路简洁、结构紧凑、使用灵活,易于扩充,通用性强。所述方法在服装CAD系统得到了实际应用,效果甚佳。
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ON THE CONCEPTION OF THE UNEQUAL HYBRIDIZATION |
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| Abstract: | In view of the unequal hybridization owing to the effect from the unshared electron pair and neglecting the effect from the situation of the bonding of molecules in present elementary chemical texts, this paper presents, in the light of the basic principles of quantum mechanics, that the orbital hybridization comes from the variation of the external field, not from the free atom itself, and indicates, supported by calculation, the effect for the component of hybrid orbit of central atoms changes with the situation of the bonding of molecules. |
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