山区送电线路因其地形复杂、相对高差大，在许多方面都具有不同于普通地形送电线路的特点，对设计工作和勘测工作有更高的要求。
Because of complex landform and big difference of elevation, transmission line in mountain area has its characteristics which are different form transmission line in common landform.
结果是有效地形成了一个液体海绵，而且该混合物能够像普通柴油那样永久储存，没有重新分离的危险。
The result is, in effect, a liquid sponge, and means the mixture can be stored indefinitely, like ordinary diesel, without risk of separation.
地形图的测绘和应用是普通测量学的核心内容之一。
Topographic mapping and application of an ordinary surveying one of the core content.
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