... 水准测段segment of leveling 高差difference of elevation；level difference 附合水准路线annexed leveling line ...
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... 高程测量 height measurement; 高程差 difference of elevation; 高程尺 height arm; ...
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mean difference of elevation 平均高差
maximum permissible difference of elevation 最大允许敷设位差
base of difference in elevation 高差基数
measurement of difference in elevation 高差测量
elevation difference of pipeline 管道高程差
elevation difference of field surface 田面高差
·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
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。
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