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Study on striped leveling staff precision test system 條碼型水準尺精密檢測系統(tǒng)的研究 Precision test gauge , accuracy class 0 . 6 高精度校驗表,精度等級0 . 6 Precision test gauge , accuracy class 0 . 1 高精度校驗表,精度等級0 . 1 The precision test gauges have a high - grade measuring element 高精度校驗表有高等級的測量元件。 The precision test gauges have a high grade measuring element 高精度校驗表有高等級的測量元件。 Field procedure for precision testing of surveying instruments ; levels 測量儀器精度檢驗的野外作業(yè)法.水準儀 Field procedure for precision testing of surveying instruments ; gyroscopes 測量儀器精度檢驗的野外作業(yè)法.陀螺儀 Field procedure for precision testing of surveying instruments ; theodolites 測量儀器精度檢驗的野外作業(yè)法.經(jīng)緯儀 The realization of a high precision test system for railway safety relays 一種鐵路安全繼電器高精度測試系統(tǒng)的實現(xiàn) Field procedure for precision testing of surveying instruments ; general information 測量儀器精度檢驗的野外作業(yè)法.一般信息