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“×”号是英国数学家威廉·奥特雷得(Oughtred,W.1575-1660)在1631年提出的.在他的著作中用“×”表示乘号.如果说“+”号是表示量增加的一种方法的话,那么“×”号则表示量增加得更加快的一种方
The “” sign was put forward by the British mathematician Oughtred (W.1575-1660) in 1631. In his writings the “*” sign indicates a multiplication sign. + “Is a means of increasing the amount, then the” x "sign indicates that the amount increases more rapidly