户外作业
As a leveling surveying instrument, digital level has many advantages in high surveying speed, objective result reading with high precision, easy interface with computer and uniform with in and outdoor operation.
作为水准测量的仪器,数字水准仪具有测量速度快、读数客观、精度高、能减轻作业劳动强度、测量数据便于输入计算机和容易实现水准测量内外业一体化的优点。
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