landform造句
        The difference is mainly in the tone not in the drainage pattern or 
landform.
所不同的主要在色调,而不在于水系型式或地形.
These mathematical definitions make basic 
landform shape concept of limit determine nat.
继而给出了如斜坡、山、山脊、凹地、谷地、鞍部等基本地貌形态的数学定义.
Micro - 
landform and micro - climate could exert great influence on conductor icing.
微地形微气候对导线覆冰有很重大的影响.