潜望镜深度 meaning in English
periscope depth
Examples
- Riding at periscope depth was a restful change after a week of plunging and rolling .
经过一星期的颠簸折腾之后，改在潜望镜深度航行是一番休息。 - In the middle of the atlantic ocean , with a salinity of 3 . 2 % , a vlf signal will penetrate down to a depth of 10 - 20 meter , barely periscope - depth for a modern large scale submarine
在大西洋中部，海水的盐度为3 . 2 % ，甚低频无线电信号可以穿透到海面下10 ~ 20米的深度，几乎就是现代大型潜艇的潜望镜深度。