Firstly, the research area is divided into three districts according to the physiognomy and the terrain: the northwest low mountainous area, north hilly area and northeast low mountainous area.
首先在空间上依据地形、地貌划分出三个区域：西北部低中山区、北部丘陵区和东北部低中山区。
Echelon model was built based on the box model and imported modified terrain coefficient, according to the characteristic of mountainous area.
根据复杂山区地形的特点，以箱模式为基础，引入地形修正系数，建立梯形模型。
It is an area where we have a favourable mountainous terrain, a good mass base, plenty of room for manoeuvre, and full guarantee for security.
此区地形险要，群众条件好，回旋地区大，安全方面完全有保障。
A region of western Ireland on the coast of the Atlantic Ocean. The area is noted for its peat bogs and mountainous terrain.
爱尔兰西部一地区，位于大西洋沿岸。此地以泥炭沼和山地出名。
In mountainous area, gravity survey external corrections, including terrain and Bouguer corrections, are the prerequisites for gravity data processing and interpretation.
山区重力勘探中，重力外部校正是重力勘探料处理和解释的前提，其内容包括地形校正、中间校正等。
In mountainous area, gravity survey external corrections, including terrain and Bouguer corrections, are the prerequisites for gravity data processing and interpretation.
山区重力勘探中，重力外部校正是重力勘探料处理和解释的前提，其内容包括地形校正、中间校正等。
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