Calculation of clearances inside the twin screw vacuum pump
TAN Yu-quan;PAN Cheng-cheng;XU Fei;WANG Zuo-yuan;FENG Ju-xian;WANG Xi-long;XU Tao;GAN Shu-yi;School of Mechanical and Automobile Engineering;Hefei University of Technology;Zhejiang Vacuum Equipment Group Co.Ltd.;
Developmemt of ultra-high vacuum heating furnace
GAO Ya-jie;XIE Yong-rong;ZHANG Yan-bin;DAI Tian-shu;CHEN Hao;General Research Institute for Nonferrous Metals;Institute of Electrical Engineering;Chinese Academy of Engineering Physics;