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·真空获得·国产LD_2铝合金管模拟北京正负电子对撞机束流管道的抽气实验…………………1(41)低温泵降温时间的计算………………………………………………………………………2(1)DDCY系列电磁压差真空阀简介…………………………………………………………2(25)新型系列超高真
· Vacuum access · Domestic LD_2 aluminum alloy tube simulation Beijing Electron Positron Collider beam tube pumping experiment 1 (41) cryogenic pump cooling time calculation ........................... ...................................... 2 (1) DDCY Series Introduction to Electromagnetic Differential Pressure Vacuum Valve ............................................................ ...... 2 (25) The new series of ultra-high real