river-crossing trigonometric leveling
river-crossing trigonometric leveling
渡河三角水准
以上为机器翻译结果,长、整句建议使用 人工翻译 。
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When completed river crossing leveling by means of trigonometric leveling with distance measurement, there are two types of observed values.
采用测距三角高程法进行跨河水准测量,可以不量取仪器高,但观测值中有两类不同的观测量。
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