ls-f 中文意思是什麼

ls-f 解釋

ls : 1. landing ship 登陸艦。2. Licentiate in Surgery 有資格開業的外科醫生。3. 〈拉丁語〉 Locus Sigilli 蓋印處。
f : 1 【化學】 fluorine 2 【生物學】（generation of） filial offspring; 【植物；植物學】子代〈F1 雜...

The first class methods are the classical frequency domain - based equivalent system methods ( f - esm ) which recommended by mil - f - 8785c and mil - std - 1797a. five longitudinal low order equivalent systems and fourteen lateral ones are discussed in detail and some pieces of advice are given. also conduct an investigation in the time domain - based equivalent system methods ( t - esm ). and for longitude short period movement, two least square ( ls ) identification methods of estimating its parameters are studied

研究了求取高增穩飛機的低階等效系統的幾種方法：研究了經典的頻域等效系統方法，針對縱向5種、橫向14種構型的低階等效系統進行了擬配實踐，並提出一些有益的看法；以頻域等效系統方法為基礎，提出了時域等效系統新方法；以最小二乘辨識為基礎，提出了兩種縱向短周期低階等效系統時域辨識方法（等效延遲時間_ q參與或不參與）。
The result shows that f ( l ) the ls are mixed of misfortune and daily hassle, daily hassle is the main factor

統計分析結果表明：（ 1 ）大學生日常生活壓力是以細礫為主，細礫與巨礫相結合的混合模型。