Electron gun vacuum lock

电子枪 真空 密封 装置

This thesis presents the Petri Net model of the dual-arms cluster tool that can describe the stay time of wafer processing and the wait time for mechanical hand unload wafer from the vacuum lock or processing module .

本文建立了双臂组合设备的PETRINET模型，利用该模型能够针对晶圆加工的逗留时间以及机械手从 真空 锁或者加工模块卸载晶圆之前的等待时间进行描述。

Influence of Vacuum Lock Property on Spectral Lines

真空 锁性能对谱线的影响

Design and application of motive sealing to vacuum lock

动密封在 真空 锁中的设计与应用

The astragal putrescence may be disassembled into three stage : putrescence stage evolve stage and resume stage . a reconditioned sewing machine ; a repaired vacuum cleaner ; the broken lock is now fixed .

结论距骨缺血坏死可分为坏死期、进展期及修复期，坏死期极少见，而以进展期及修复期最多。修好的锁线装订机；修好的 真空吸尘器；坏的 锁现在修好了。

A reconditioned sewing machine ; a repaired vacuum cleaner ; the broken lock is now fixed .

修好的锁线装订机；修好的 真空吸尘器；坏的 锁现在修好了。