美国至7月30日4个月国债竞拍-投标倍数 3.45，前值3.55。

Core Insights - The bid-to-cover ratio for the 4-month U.S. Treasury auction as of July 30 was 3.45, a decrease from the previous value of 3.55 [1] Group 1 - The current bid-to-cover ratio indicates a slight decline in demand for the 4-month Treasury securities compared to the last auction [1]