FIC. r3.--(Stoughton.) Meshes of pearlite in a network of cementite from hyper-eutectoid steel.
The equation of virtual work is then formed by taking moments about C, D, E, F of the extraneous forces FIC 2 which act at C, D, E, F, respectively.
Thus a M circular disk projected under gravity in a vertical plane spins Fic. 7~.
FIC r ?
Like most of Berners ' fic tion it is a roman Ã clef.