normal curve of frequency 中文意思是什麼
normal curve of frequency
解釋
常態次數曲線-
Standard deviation in statistics, a measure of the dispersion of a frequency distribution : it is the average magnitude of deviations from the center of normal curve, calculated by squaring all the deviations, calculating their mean, then finding the square root of the mean
標準偏差：統計中，一種衡量數據組分佈的分散或變化情況的數據，是偏離正態分佈中間位置數據大小的平均值。 -
In addition, 4 pieces of prestressed small - sized concrete hollow block masonry models and 1 piece of normal concrete hollow block masonry model are tested under frequency low - cyclic static load. some seismic behaviors such as strain - stress curve and ductility of the prestressed masonry were analyzed
進行了4片預應力砌塊砌體墻和1片對比用普通墻的低周反復荷載試驗，分析了預應力砌體的滯回曲線、延性等抗震性能。 -
In contrast to phase separation ( curve - fitting ) approaches which are largely mathematical, phase resonance testing is a physical technique. when a structure is vibrating in a normal mode, the undamped natural frequency and normal - mode shap of the structure are directly measured. in the classic phase resonance testing, the test data processing is simpler and the results are more accuracy
相對于相位分離法來說，相位共振法是一種比較直觀的物理識別方法，在結構做「純模態」振動時，通過物理測量直接獲得模態參數;試驗數據處理工作量小，且精度一般比單輸入系統高。
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