trend ratio method 中文意思是什麼
trend ratio method
解釋
趨勢比率法-
The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。 -
The paper is divided into three sector : in the first sector, base on cohort - component method and via quantitative analysis and qualitative analysis to matter of fact, the paper imports several variable : accelerating function of survival rate, correct children women ratio, proportion of infants, and establish correct cohort - component method. in the second sector, base on several hypothesis, zhejiang province population forecasts are made by correct cohort - component method, and population composing are presented in the future. in the third sector, base on results of zhejiang province population forecasts, the paper discusses change trend of mainly population index in the 21 century, and analyzes how population trend effects development of society and economy
本文分三部分進行：第一部分，在隊列要素法的基礎上，通過對實際情況的定量分析與定性分析，在模型中引入了以下變量：生存概率加速函數、修正兒童婦女比、幼兒性別比，建立了修正隊列要素法模型；第二部分，在幾個重要假設的基礎上，根據修正隊列要素法進行浙江省未來五十年人口預測，給出了各預測年份分性別年齡的人口構成情況；第三部分，是在上述預測結果的基礎上，對21世紀前半葉浙江省的主要人口指標的變化趨勢進行討論，並對浙江省的總的人口變動趨勢及其對社會經濟發展影響進行分析。 -
The fourth one is the research and application of the price - earnings ratio, which find some mistakes in the calculating method and the limitation in its application of the price - earning ratio ; this chapter brings forward the synthesis price - earning ratio, by which we can measure the contribution to the stock market of the stock speculation and the stock investment. the fifth one is the prospect of the stock market in china ; it analyzes several factors including china ' s entrance to wto, which can effect the development of our country ' s stock market and puts forward some opinions to the development trend of our county ' s stock market
第4章股票市盈率研究及其應用，通過對股票市盈率的技術經濟分析，發現股票市盈率計算方法有一定的缺陷性和在應用上具有一定的局限性后，提出了綜合市盈率的概念，然後通過對綜合市盈率在我國股市中的應用，計算出了近年來股票投資和股票投機對我國股市的貢獻度；第5章未來我國股市的展望，分析了對我國股市發展有影響的幾種因素及加入wto對我國股市的影響，最後對未來我國股票市場的發展趨勢提出了幾點看法。
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