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结束语：比号又叫比值号，也叫比率号，在数学中的作用相当于除号÷。在行文中，冒号的作用一般是提示下文。返回搜狐，查看更多By clicking “Acknowledge All Cookies�? you comply with the storing of cookies with your device to improve web-site navigation, evaluate site use, and aid within our inter