landform mapping meaning in Chinese

地形制图

With high agility and high accuracy , and being safe and reliable in flight , unmanned helicopter has a broad prospect in city traffic monitoring , landform mapping and battlefield reconnaissance
无人直升机的高灵敏度、高准确性和高可靠性使得它在城市交通监控、地形测绘和战场侦察等方面有着广泛的应用前景。
However , people studied the riverway mainly by field survey and landform map contrast before . because of the limits of man ' s field view and complexity of field survey route , it is a difficult bottle neck for people to make synthetical analysis on geological structure , yangtze river shoal , floodplain , terrace , and microcosmic suspended load on macroscopical scale
而以往的河道研究大多数是通过地面调查和地形图室内对比分析来研究的(少数运用航片) ，由于受人的视域范围及调查工作路线的布置的复杂度影响，对区域宏观尺度下的地质构造、长江沙洲、漫滩、阶地及河流微观领域的悬浮物等作综合性的研究便成为了瓶颈。