ST72T63游戏杆源程序，电脑周边产品，产品很成熟，厂家开过ＭＡＳＫ　ＩＣ，大量销往欧美，INTERACT大量使用．如需开发编译器请johnsonhcj@yahoo.com.cn联系．-ST72T63 joysticks source, computer peripheral products, mature products, the manufacturers held MASK IC, sold in large quantities Europe and the United Stat

有12个球，不知道重量，有个无砝码的天平，称量3次，区分12个球的轻重-There are 12 balls, I do not know the weight, there is a non-weight scale, weighing 3 times, the distinction between the severity of the ball 12