... 横距杆测距法 subtense bar system 横杆测距法 subtense method 伏流 subterranean drainage ...
基于16个网页-相关网页
subtense method with vertical staff [测] 竖基尺视差法
subtense method distance measurement 视差法测距
distance measurement with subtense method 视差测量法
distance measurement by subtense method 视差法测距
subtense method with horizontal staff [测] 横基尺视差法
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