Digital Elevation Model (DEM) records topographic fluctuation changes and in which it contains various topographic construct information including valley lines and ridge lines.
数字高程模型(dem)是记录地形起伏变化的资料，当中蕴含着各种地形地貌的结构信息，其中包括山谷线和山脊线。
But at times, regional electric lines have been so congested that Maple Ridge has been forced to shut down even with a brisk wind blowing.
可是，有时地区输电线路拥塞太严重，即便风力条件非常理想，梅普瑞吉风电场也不得不被迫停止运行。
Reading the life in the peaceful space, the floating thought slides past the book ridge, which invites the implied spirit meaning between the lines.
在宁静的空间展开对生活的阅读，飘散的思绪不自觉间滑过书脊，激荡起字里行间的精神寓意。
The results demonstrated that the external morphological structure of gill rakes, the gill arches and the gill filaments showed the presence of various features such as annular ridge and short lines.
结果表明：鳃耙、鳃弓、鳃丝上皮细胞表面都有环形隆嵴、断续的短纹；
The results demonstrated that the external morphological structure of gill rakes, the gill arches and the gill filaments showed the presence of various features such as annular ridge and short lines.
结果表明：鳃耙、鳃弓、鳃丝上皮细胞表面都有环形隆嵴、断续的短纹；
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