One very old method used in the investigation of past climatic conditions involves the measurement of water levels in ancient lakes.
在调查过去的气候条件时使用的一种非常古老的方法是测量古代湖泊的水位。
The levels of measurement technology in the two countries are influenced greatly by such differences.
两国间的测量技术水平受这种差异的影响很大。
Today's trains are being equipped with increasing levels of measurement, control and protection systems, giving rise to multiple sensor locations and a battle to find the space for installation.
目前铁路对测量、控制和防卫系统的要求将越来越高，这就需要有装备多支传感器的位置，并找到装备这些传感器的空间。
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