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- frequency thickness ratio 频率厚度比
- Finally, single sand bodies were correlated by using model, lithology and thickness ratio. 最后利用模型以及岩性和厚度比例对比单砂层。
- Previous research has shown that thickness ratio,main strain and rolling direction influences the FLD of TWBs. 当前国外学者初步研究了材料厚度比、载荷形式、轧制方向等若干因素对拼焊板成形极限的影响规律;
- The study also showed that the determinant of lift was not the thickness ratio, but the angle of attack, the relative camber and the camber line. 这些方法得到的结果一致证实产生升力的因素不是单纯的相对厚度，而是迎角、翼型相对弯度以及中弧线。
- The results indicate that the formability of laser tailored blank depends on the intensity and thickness ratio of two kind blanks. 研究结果表明,对不同材质和不同厚度的拼焊板,零件的变形取决于两种材料的强度比和厚度比。
- The purpose of this paper was to validate the effects of airfoil thickness ratio on the characteristics of a family of airfoils. 本文采用不同的方法验证了相对厚度对机翼气动特性的影响。
- The best protection，as evinced with EIS, was obtained for the coating systems with the thickness ratio of primer/topcoat about 2:1. 且当环氧富锌底漆为涂层总厚度的2/3左右时，涂层体系的防护性能最好。
- By discussing the influences of the ratio on forces,friction,wear and strength of the vanes,the suitable thickness ratio of the double decked vane compressor had been optimized. 上层滑片与下层滑片的厚度比是双层滑片压缩机的重要结构参数，通过对不同厚度比的双层滑片结构的受力状况、摩擦磨损及强度的分析比较，找出了厚度比的适宜值。
- B.8.7) Cracks are evaluated according to crack length ratio (CLR) and crack thickness ratio (CTR) by measuring the total crack length and extend of stepwise cracking respectively. 根据裂纹长度率（CLR）和裂缝厚度率（CTR），通过测量总裂纹长度和分别扩大逐步龟裂，对裂缝进行鉴定。
- The area of hiatus and the muscular thickness of the crura increased with age.The hiatus area to crura muscle thickness ratio decreased with age (P＜0.05). 食管裂孔面积和肌厚随婴儿年龄而逐渐增加，而裂孔肌相对厚度与胎儿组比较均减少(P＜0.;05)。
- The thickness ratio appeared to have little effect on lift coefficient at zero angle of attack, since the angle of zero lift was largely determined by the airfoil camber. 在迎角为零时，由于零升力主要由机翼中弧线决定，相对厚度对升力几乎没有影响。
- The results showed that the effects of traverse shear on displacement and strees are not ignorable,as the length thick ratio of laminate is less than 30. 结果表明：四边铰支的正交异性层合板，当其长厚比小于30时，横向剪切变形对其位移和应力的影响是不容忽略的。
- Light microscopy showed WA/TA (vessel wall area/total area) and PAMT (media thickness ratio of pulmonary arterioles) were significantly lower in rats of HP group than those of HH group(P< 0.01). HP组的肺细小动脉管壁面积 /管总面积比值 (WA/TA)和中膜厚度 (PAMT)均明显低于HH组 (P <0 .;0 1);且低于HL组 (P <0
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- Optimization of vane thickness ratio of double-decked vane compressors 双层滑片压缩机两滑片厚度比的选择分析
- Research on Depth - thickness Ratio Check of walls With Constructional Columns 带构造柱墙的高厚比验算探讨
