首页>
外国专利>
device for measuring small displacements of a light spot and is the visibility and, based on the two loetstellen a differentialthermoelementes connecting thermodraht along moves and thereby changes in the strength of the two gegeneinandergepolten loetstellen elektromotorischen effect of
device for measuring small displacements of a light spot and is the visibility and, based on the two loetstellen a differentialthermoelementes connecting thermodraht along moves and thereby changes in the strength of the two gegeneinandergepolten loetstellen elektromotorischen effect of