standard mean level 中文意思是什麼
standard mean level
解釋
基準平均潮位-
Result of study indicate high school student, ethnic minority of guangxi, total creativity competence relatively high at present, mean value is 98. 96, in other words the standard divides into 9 fen, but creativity level differs greatly in students, and city and student creativity of outlying district difference of competences extremely remarkable, urban students " creativity overall level is higher than students in the outlying district
研究結果表明，目前廣西少數民族高中生總體的創造力水平較高，均值為98 . 96 ，相當于標準分9分，但學生中創造力水平的差異較大，而且城市與邊遠地區的學生創造力水平的差異極為顯著，城市學生的創造力總體水平高於邊遠地區的學生。 -
Welch, 1967 ), the author calculated noise power spectrum of every site to see if the noise level of the array site accord with ims standard ( the noise level at 5 hz must lower than - 135db ), and the result suggest that the noise level accord with the ims standard. to find out the principle of noise ' s variation, the root mean square of every site had been calculated and analysised, the result show that several sites had obvious daily variation which is relevant to the tv transmittion tower on the top of dajianshan
Welch ， 1967 ）對臺陣陣址各測點的噪聲功率譜進行了計算與分析並對各測點的噪聲均方根值做了計算，結果表明臺陣的背景噪聲達到了ims要求的標準（即在5hz處噪聲功率譜要小於- 135db ） ，多數測點的噪聲有明顯的日變化規律，這與大尖山頂的tv發射塔有關。 -
3. the effect of measurement error is considered as gauss white noise. through theoretical analysis and numerical simulation, damage assessment results are also subject to gauss distribution. furthermore, results indicate that the mean keeps intact, but the standard deviation is linear to error level
3 、將測量誤差的影響考慮為正態分佈的高斯白噪聲，通過理論分析和數值模擬，說明用靈敏度分析法識別結構損傷時，損傷識別結果也服從高斯正態分佈，其平均值保持不變，而方差則與誤差水平成線性關系。 -
Qnh is the pressure at mean sea level, reduced from qfe by applying corrections according to the international civil aviation organisation s standard atmosphere
Qnh是海平面氣壓，根據國際民航組織所訂立的標準大氣將qfe轉換而成。
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