世界上最长的缩写，包含56个字母：

NIIOMTPLABOPARMBETZHELBETRABSBOM
ONIMONKONOTDTEKHSTROMONT

它的意思是: Laboratory for Shuttering, Reinforcement, Concrete and Ferroconcrete Operations for Composite-monolithic and Monolithic Constructions of the Department of Technology of Building Assembly Operations of the Scientific Research Institute of the Organization for Building Mechanization and Technical Aid of the Academy of Building and Architecture of the USSR.