The corrugated steel, frameless structure proved to be most blast-resistant of those tested . 槽纹钢板无架结构经事实证明是试验中最能抗爆震波影响的。
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The experimental research on the frameless registration based on the digital subtraction angiography 基于数字血管减影的无框架配准算法的实验研究
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Frameless implanting hard passage technique in treatment of the severe traumatic epidural hematomas 无头架硬通道置入技术治疗重型创伤性硬膜外血肿中的应用价值
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Jdy - 002 full frameless glass door electric bolt delayed time : 0s , 3s , 6s , 9s monitor output point no nc , automatically cut off the detection point after 14s when locked working voltage : 12vdc start current : 0 . 85a , working current : 0 . 25a features : voltage range : 9 15v with led , no noise bright silver cover left - opened type and right - opened type can be widen more than12mm dimension : 205 x 55 x 40mm weight : 1260g right - opened type left - opened type yiwu qimingxing computer company copy right Jdy - 002全无框玻璃门电插锁此款为右开门此款为左开门可调试延时启动时间： 0 3 6 9秒监视接点输出no nc信号，门上锁后14秒自动切断感应点使用电压12vdc ,启动电流0 . 85a ，持续工作电流0 . 25a特点：具指示灯，无噪音适应电压宽度9 - 15vdc可夹玻璃门宽度为12mm亮银色面板,分为左右两款外形尺寸： 205 x 55 x 40mm重量： 1260g
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The background of rapidly developed uhsm ( ultra high speed machining ) technology is introduced and the key function of the uhs ( ultra high speed ) motorized spindle to uhsm is discussed in the thesis . after analyzing international technology status and trend of the uhs motorized spindle study , we research the core technologies related to the uhs motorized spindle in detail , such as optimized design of the motorized spindle structure , high speed bearing technologies , oil - gas lubication technologies , precision machining and assembly technologies , design and manufacture technologies of the built - in frameless motor etc . then the digital simulation of the motorized spindle sensor - less vector control system is studied thoroughly 本文从超高速加工技术飞速发展的背景出发，讨论了超高速电主轴对超高速加工技术发展的重要作用和意义；分析了超高速电主轴研究的国内外现状及发展趋势；详细论述了超高速电主轴的关键技术，包括电主轴结构优化设计、高速轴承技术、油气润滑技术、精密加工与精密装配技术以及内装式电机设计制造技术等，并深入研究了超高速电主轴无速度传感器矢量控制系统的数字仿真技术。
