survey at interval 中文意思是什麼
survey at interval
解釋
間隔檢驗-
Travel time is the key point of system, its measure quality decides the survey precision of the stress. time to digital convertor ( tdc ) was applied to accomplish the precision time interval measurement. at the same time, one transmitter - two receivers probe arrangement and zero - crossing detecting method were also applied to reduce the errors in measurement
傳播聲時是整個測量系統中的關鍵量,其測量水平決定應力的測量精度,對此本文採用時間-數字轉換器( timetodigitalconvertor , tdc )完成高精度時間間隔測量,在實現過程中又分別採用「單端發射-雙端接收」的探頭布局模式和「過零檢測」手段來降低系統檢測誤差。
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