soundings

They were sounding the river.

他们在探测河水的深度。

Just as smooth and real sounding as the tube gear, but with better focus and overall tidier presentation.

非常柔细如胆机但更好的刻画力与全面的还原力。

It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.

岩土工程察的一种手段，包括钻探、井探、槽探、坑探、洞探及物探、触探等。

The relationship between arctic tropopause height and surface air temperature is discussed by using the aerological sounding and surface data during 1977-1990 in Beijing area.

利北京地区1977—1990年的高空、地面资料，讨论了极地对流层顶与地面温度的关系。