共 50 条
- [32] SOME IMPROVEMENTS OF PERFORMANCE OF TURBOMOLECULARPUMPS VAKUUM-TECHNIK, 1971, 20 (07): : 193 - &
- [38] Performance improvements of a biplane with endplates JOURNAL OF AIRCRAFT, 2001, 38 (02): : 398 - 400
- [39] PERFORMANCE BONDING FOR SUBDIVISION IMPROVEMENTS CURRENT MUNICIPAL PROBLEMS, 1970, 11 (04): : 387 - 409