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西安电子科技大学数据库系统课件3.4 数据更新INSERT与UPDATE
西安电子科技大学 数据库系统 课件 数据更新 UPDATE
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2019/5/9
西安电子科技大学数据库系统课件3.4 数据更新INSERT与UPDATE。
玉米全膜覆盖双垄沟播机直插式播种装置设计与仿真(Design and Simulation of Direct Insert Corn Planting Device of Furrow-Seeder with Whole Plastic-film Mulching on Double Ridges)
玉米播种机 全膜覆盖 直插机构 设计
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2010/12/28
设计了旱地玉米全膜覆盖双垄沟播机直插式玉米播种装置,采用凸轮和曲柄组合机构控制成穴器,实现播种时间段成穴器水平绝对速度为零。在ADAMS/View中用相对轨迹曲线生成实体的方法设计了凸轮,对直插式播种装置进行仿真分析,测试了成穴器的位移、速度、加速度,结果表明该装置满足设计要求。
Welding of girders to insert plates of composite steel-concrete structure of tower in Kuwait
Welding MMA insert plate Composite reinforces concrete
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2009/12/1
Purpose: A study of influence of preheating and MMA welding technique of tee-joints of plate girders to insert
plates of a composite steel-concrete structure of the telecommunication tower, on the pr...
随心所欲的Insert coin书架
Insert coin书架 随心所欲
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2009/9/9
Insert coin书架由德国Neuland Industriedesign组合于2007年为德国Nils Holger Moormann公司设计,并在去年的米兰国际家具展上进行了展出。该书架由一个可挂在墙上并设有插孔的面板和众多小隔板组成,使用者可根据其需要将隔板插在不同的位置,因此每个Insert coin书架都可以有不同的形态。
Friction of Conventional and Silica-Insert Ceramic Brackets in Various Bracket-Wire Combinations
Friction Ceramic bracket
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2008/11/3
Objective: To compare the level of friction resistance (FR) of conventional and silica-insert ceramic brackets using various bracket-wire combinations and angulations.Materials and Methods: Four types...
The influence of solid particles density on parameters of multijet insert
Foundry Settling tank Sedimentation
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2011/3/15
Some dependences between solid particles density, chosen geometry and exploitation parameters of multijet inserts and development of laminar motion in continuous multijet sedimentation process, are pr...
Welding of girders to insert plates of composite steel-concrete structure
Welding MMA Insert plate
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2010/2/10
Purpose: of this paper: A study of influence of preheating and MMA welding technique of tee-joints of plate girders to insert plates of a composite steel-concrete structure of the telecommunication to...
Pd-Catalyzed Insert Carbonyl Coupling Reation of Hypervalent Iodohetero- cycle with Alcohol and Amine
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2007/7/28
期刊信息
篇名
Pd-Catalyzed Insert Carbonyl Coupling Reation of Hypervalent Iodohetero- cycle with Alcohol and Amine
语种
英文
撰写或编译
作者
梁永民,罗盛军,马永祥
第一作者单位
刊物名称
Molecules,
页面
2005, 10, 238-243 (2
出版日期
2005年
月
日
文...