Research on evaluating the tool changing time of ATC of machining center;
对加工中心自动换刀装置换刀时间的探讨
This paper firstly consider the Bertino’s work which introduce periodic time and temporal dependencies in DAC model, and then presents a permission delegation model PDACDM to support temporary constraints, temporal dependencies constraints and propagation constraints.
参考Bertino等人的工作,基于他们提出的加入了周期时间和时序依赖的自主访问控制模型,给出了一个支持临时性限制、时序依赖性限制和传播性限制的权限委托模型PDACDM。
A weighted role for activating task and periodic time authorization is an unsolved major problem for the access control of a workflow management system (WfMS).
带权角色激活任务和周期时间授权是工作流系统访问控制研究尚未解决的核心问题。
The traditional RBAC model cannot express time secure access control constraint,so proposed a new RBAC model with time character,in which defined a new concept of authorization based on periodic time.
针对传统的RBAC模型不能表达时间特性安全访问控制约束的缺点,提出了一个带有周期时间特性的安全访问控制模型。
G eneva type, Arm type A. T. C. system with bi-direction and random tool selection function can minimize tool changing time, as well as enhancing the efficiency of machining.
斗笠式，刀臂式自动换刀系统可做双向，最短距离选刀，大幅缩短换刀时间，提升加工效率。
Tools are changed in six seconds or less.
刀具能在六秒或吏短的时间内更换完毕。
In addition, they have minimized the time lost in changing tools, carrying out gauging operations, and aligning workpieces on the machine.
此外,更换刀具,测量和工件定位的时间也缩短至最低限度。
interval of service
换班时间, 休息时间
Sword and spear and battle-ax have gone into the discard of time.
刀枪剑戟已被时间所淘汰。
Effect of holding time on the brazing properties of PCD cutting tools
恒温时间对PCD刀具焊接性能的影响
cross office switching time
交叉电话局转换时间
pulse amplitude to time converter
脉冲幅度 时间变换器
pulse amplutude-to-time converter
脉冲幅度-时间变换器
pulse-height to time converter
脉冲幅度-时间转换器
The scenes are changed during the interval.
剧间休息时更换布景.
conversion of arc to time
角度、时间单位换算
time scaling of Lapalace transform
拉普拉斯变换时间定标
time pision switching system
时间分割制交换系统
The time that will shift and change is" the old time.
那将转换并改变的时间是“旧的时间“。
Consume as much material about your prime focus as you can budget.
尽量把资源用在主要目标上，把时间花在刀刃上。
though rosy lips and cheeks Within his bending sickle's compass come;
虽然红颜到头来总不被时间的镰刀遗漏；
Ultrasensitive Time-resolved Fluoroimmunoassay of Deoxynivalenol
脱氧雪腐镰刀烯醇时间分辨免疫法的建立