Abstract:
A machining oil composition comprises at least two ingredients, that is a lubricating base oil and a salt selected from sulfonates of alkali metals and the like. The composition may further comprise a metal composition selected from thiophosphates and the like, and/or sulfur-based extreme pressure agents. Since no chlorine-based extreme pressure agent is contained, little problem on the environmental pollution or the damage of incinerators is involved. The composition exhibits good machining or cutting performance.
Abstract:
A match game processing method performs a match game having a plurality of stages by a plurality of players. By communicating among game apparatuses, a control unit controls to synchronize among the plays by the players in a virtual space, on a stage-by-stage basis. The game can be completed with a reduced waiting time of each player. Also, in a ghost match, the game proceeds in such a way that the control unit in the game apparatus performs a simple playback of a ghost data, according to the execution result obtained through the operation inputs from the player. Thus, in response to the execution result by the player, the ghost match is performed and the game time can be shortened.