long time deflection 中文意思是什麼
long time deflection
解釋
持久撓度-
To our satisfaction, all the measuring results from the measurement locale are accurate and convincing comppared with the results calculated by the theory which makes it clear that the system can meet the demands of measuring upon the dafosi bridge of changjiang river. the system has achieved the long - time and real - time automatic deflection measurement of the bridge at first time in our country, and the system has passed the appraisal of the experts consigned by the ministry of communications so the system has the practical value on the long - span bridge ' s deflection measurement
通過對橋梁實際測量結果與理論計算的結果的對比分析可知，本文所設計的連通管式光電撓度測量系統測量數據準確，系統可靠，能夠滿足大佛寺長江大橋撓度測量的需要。該撓度測量系統首次在國內實現了橋梁主梁撓度的長期實時自動監測，並且已經通過了交通部的項目驗收，具有一定的推廣價值 -
The measurement of deflection of a bridge is crucial constituent part in the monitoring of bridges. the majority of existing methods about bridge deflection measurement can not accomplish the real - time and long - range measurement. the ultrasonic method based on connected pipes still has shortage in precision and speed of measurement. to satify the need of deflection measurement of the dafosi bridge of changjiang river, an opto - electronic measurement method is to be used to improve on the method based on connected pipes. furthermore, we will design an automatic opto - electronic deflection measurement system based on connected pipes which can be practised in the long - span bridge
大型橋梁的安全監測具有重要的現實意義，而撓度監測是橋梁監測的一個重要的組成部分。目前現有的許多撓度測量方法還不能實現實時遠程監測，已有的連通管式超聲波法還存在著精度較低，測速慢等不足。針對大佛寺長江大橋撓度測量的需要，在此採用精度較高的光電測量方法結合連通管的優點加以改進。 -
The faster an object moves, the greater difference it has between real existence and result of observation. deflection of space - time allows us to know the difference. when the airship is stationary, we say the real length of the ruler is the same as its measured length, however as long as the airship leaves the earth with a high speed, we can find there is error between its real length and measured length
我們還以飛船上的尺子為例，當飛船與地球相對靜止時，我們說這兩把尺子等長，尺子的真正的長度與我們看到的長度是相等的，但當飛船飛離地球時我們會發現，在飛船上的尺子的真正長度與我們所看到的尺子的長度有誤差，而且隨飛船速度的增加，這一誤差會越來越大。
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