It takes time for the cooling temperature to stabilize 冷却水温度安定时间长。
2.
The first one is founded on traditional dual - slope conversion while considering the non - ideal effects such as settling time to extend the measurable range below 0 . 5ns 第一种是根据传统的双斜率转换并同时考量安定时间等非理想因素而将可测范围向下延伸至0 . 5奈秒。