中文：

量比是指股票市场开市后平均每分钟的成交量与过去五个交易日平均每分钟的成交量的比值。它反映的是投资者在面对当前股票价格波动时的活跃程度和投资情绪，以及市场资金的参与程度。

当量比值大于1时，说明当前每分钟成交量大于过去五个交易日的平均水平，即投资者活跃度和参与程度较高，市场资金积极参与，这可能意味着股票价格即将出现较大的波动。而当量比值小于1时，说明当前每分钟成交量小于过去五个交易日的平均水平，即投资者活跃度和参与程度较低，市场资金较为谨慎，这可能意味着股票价格波动较为平稳。

量比值的变化可以反映市场投资者的情绪变化以及市场的活跃度和趋势，是投资者进行短线交易的重要参考指标之一。

英文：

The volume ratio refers to the ratio of the average minute-to-minute trading volume in the stock market during the current trading day to the average minute-to-minute trading volume of the past five trading days. It reflects the activity level and investment sentiment of investors in response to current stock price fluctuations, as well as the participation degree of market funds.

When the volume ratio is greater than 1, it means that the current minute-to-minute trading volume is greater than the average level of the past five trading days, indicating high investor activity and participation, as well as market funds actively participating. This may indicate that stock prices are about to experience significant fluctuations. When the volume ratio is less than 1, it means that the current minute-to-minute trading volume is less than the average level of the past five trading days, indicating low investor activity and participation, as well as market funds being cautious. This may mean that stock price fluctuations are relatively stable.

Changes in the volume ratio can reflect changes in market investor sentiment and market activity and trends, making it an important reference indicator for investors to engage in short-term trading.