青云翻译

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Contacts in the measure, INVAR hanging foot foot and hooking Tower using improved productivity. Vertical angle and distance can be controlled at a range of conditions, the method of total station apparatus triangulated height also applies to measurement of settlement of tunnel vault, and greatly red

In contact gauging, because the tile hung ruler and the suspension hook tower ruler use enhanced the working efficiency.In can the vertical angle and the distance control in under certain scope condition, the entire station meter triangle elevation method is suitable similarly for the tunnel arch su

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Contacts in the measure, INVAR hanging foot foot and hooking Tower using improved productivity. Vertical angle and distance can be controlled at a range of conditions, the method of total station apparatus triangulated height also applies to measurement of settlement of tunnel vault, and greatly red