About DVORKIN B M
About TROFIMOVSKIJ V V
About Problemy Prochnosti
About turbomachinery
About Heat exchangers,coolers
About Applications of holography
About Fluid machineries in general
About ガス冷却装置
About 集合体
About 研究
About ホログラフィ干渉法
About 度量衡
About 保証