underwater-to-air的意思|示意

The hippopotamus can survive underwater for up to 30 minutes without having to come up for air.

河马在不浮上水面换气的情况下，可以在水下度过30分钟以上。

Those that do tend to be insect larvae, which live on land, making their sounds into the air rather than underwater.

能够发出声音的往往是昆虫幼虫，它们生活在陆地上，在空气中制造出声音，而不是像这种蝌蚪一样在水下发出声音。

Chagrians were truly amphibious, retaining their ability to breathe underwater while also able to function without difficulty in air.

查格里亚人是真正的两栖种族，保留着水下呼吸的能力，同时也能在岸上毫不费力的作到这一点。

Limited from detecting means, the threat estimation on air targets is a difficult problem to submarine underwater.

由于受探测手段的限制，水下潜艇对空中目标的威胁评估一直是研究难题。

Firstly, the ray method and normal mode method are used to calculate the acoustic field in underwater with the source in the air.

首先，用射线方法和简正波方法对空气中的声源在水下产生的声场进行了分析。

The invention uses general petrol engine, to work carrier on water and underwater, to condition the air, with long service life and high safety.

该系统工作寿命长，性能可靠，安全性、隐身性指标高，运转经济，操作简便，有显著的经济效益和社会效益。