The effect of tribology factors on bearing vibration is studied experimentally. AR model and WPT are used to processing the normal arid abnormal signals. The results are as follows:1. The vibration of ball bearings is caused by the tribology action of contact pairs of ball and ring races and has the essential of tribo-dynamics. Any factors affecting the tribology characteristics of contact pairs will affect vibration and noise of bearings consequently.2. Vibration characteristics of bearing keep almostly unchanged with the increasing of axial load expecting the increasing of nature frequencies. When radial load increasing with axial load unchanged, nature frequencies keep unchanged but some new vibration peaks appears in the spectrum.3. Vibration amplitudes are damped and nature frequency are enhanced with sufficient lubrication. Vibration and noise of bearings increase obviously and roar can happen and the contact surfaces scratch slightly under insufficient and unclean lubrication state. Bearing will be disabled in a few minutes without any lubrication.4. Bearing vibration is unstable under low speed. With the speed increasing, the vibration become stable and natural frequencies increase slightly but the amplitudes increase apparently.5. Bearing vibration can be excited only by some harmonics ofwaviness without lubrication and by all harmonics with lubrication based on the theoretical analysis.6. The nature frequencies of ball bearings decrease with the increasing sizes. When international clearance increasing, nature frequencies decrease in radial and increase in axial and angular and the amplitudes increase in radial and decrease in axial and angular. When the number of balls increasing, nature frequencies increase and amplitudes decrease. When the pitch diameter increasing, axial nature frequency increase and others nearly keep no change. When outer race groove curvature radius increasing, nature frequencies increase in radial and decrease in axial and angular and amplitudes keep no change in radial and increase in axial and angular. When inner race groove curvature radius increasing, nature frequencies decrease and amplitudes increase.7. The distortion in amplitude and frequency components of bearing vibration signals picked up by the present probe measurement method is founded and right conclusions cannot be achieved by the signals. When accelerometer is rigidly screwed with steel stud onto a flat outer surface of a ball bearing, vibration signal can be got without distortion and the reliability of research on bearing vibration is assured.8. AR model is suitable for large samples of bearing vibration signals, square root of length of samples can be used as the upper limitation of order determination and the FPE order selection criterion is effective. Many advantages of AR spectrum are founded over the classical based on FFT.9. Time-Frequency analysis is necessary for abnormal noise of ball bearings. WPT overcomes the principle shortcomings of STFT and proved to be a best tool to process the abnormal signals.

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By integrating the multi-discipline methods of petroleum geochemistry, sedimentology, hydrogeology, petroleum geology and experimental geochemistry, the thesis has carried out experiments of microcline dissolution in solutions with organic acids, crude oil, brines with high total dissolved solids , and has dealt with Al distribution between the crude oil and the brines after the experiments.

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In the present work, the technique and conditions of the presentment have been investigated, as well as the effect of cleaning, etching and activation upon electroless nickel-phosphorus plating.

研究了在SiCp/Al復(fù)合材料表面化學(xué)鍍Ni-P合金的預(yù)處理工藝国产一级a爱大片免费视频，系統(tǒng)分析并闡述了除油久久国产超碰女女AV，粗化，活化等工序?qū)瘜W(xué)鍍Ni-P合金的作用和影響欧美老妇午夜福利视频。

The germination and growth of alfalfa and wheat seeds was inhibited evidently with increase of oil concentration, the dry weight of their root or radicel decreased regularly with the increase of oil concentration and can be used to judge the degree of oil pollution of soil.

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The results as follows: all eight extracts deactivated TMV in vitro and have inhibition of the infectory of TMV, and seven extracts showed therapeutically activity in different degree on TMV except Cantharellus minor Peck.

試驗結(jié)果表明：8種食用菌提取物在體外都具有鈍化病毒及抑制病毒侵染的作用；除雞油菌外性色一区，其它7種食用菌提取物對TMV有不同程度的治療作用jizz有基视频色欲。

Experiment on the transesterification and esterification of acidified soybean oil has been studied.

試驗研究了大豆酸化油在復(fù)合酸催化劑的作用下與甲醇發(fā)生轉(zhuǎn)酯化和酯化反應(yīng)生成脂肪酸甲酯的最佳反應(yīng)條件。

The repeated using and catalytic activity of these solid acid catalysts have been studied in the synthesis of biodiesel using acidified soybean oil as raw material.

試驗研究了大豆酸化油在復(fù)合酸催化劑的作用下與甲醇發(fā)生轉(zhuǎn)酯化和酯化反應(yīng)生成脂肪酸甲酯的最佳反應(yīng)條件A国产无码。

Using hydrotreated gas oil as solvent, under the conditions of a reaction temperature of 400 C, a hydrogen partial pressure of 10 MPa and a reaction time of 1 h, a portion of coke deposits could be removed yet without the function of hydrogenating coke.

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carburation by evaporation：蒸發(fā)汽化

carburated water gas | 增碳水煤氣 | carburation by evaporation | 蒸發(fā)汽化 | carburation | 滲碳作用,化油作用

carburet gas：滲碳氣, 增碳煤氣

carburation | 滲碳作用,化油作用 | carburet gas | 滲碳氣, 增碳煤氣 | carburet | 使與碳化合, 增碳

estragon oil：草蒿油(增香劑)

estival 夏令的 | estragon oil 草蒿油(增香劑) | estrification 酯化(作用)

hydrogenation：氫化作用

反式脂肪是人造油脂,經(jīng)過氫化作用(hydrogenation)產(chǎn)生的植物油(如橄欖油激情视频永久在线、葵花油国产首页在线、芝麻油、花生油欧美日韩另类国产、大豆油及玉米油等)多屬此類. 反式脂肪最初是作為不健康的飽和脂肪(saturated fats)的替代物,因為可延長食物的保存性,并讓食物更加脆薄可口,

ricinus communis：蓖麻子油 滋潤粗壮公每次进入让我次次高潮、保濕

Rice Starch 米淀粉 添加物、稠化劑 | Ricinus Communis 蓖麻子油 滋潤偷拍视频三区、保濕 | Rose Extract 玫瑰粹取 收斂啪啪免费网站大全、護理作用

Shea Butter：乳木果油 / 乳木果油

乳木果油:乳木果油(shea butter)也稱牛油樹脂,白色漿狀體純天然綠色植物源固體油脂,能促進表皮細胞再生,付於皮膚營養(yǎng)作用. 乳木果油與人體皮脂分泌油脂的各項指標(biāo)最為接近,蘊含豐富的非皂化成分,極易于人體吸收,不僅能防止干燥開裂,

wintergreen oil：冬青油;鹿蹄草油

冬化(作用) winterization | 冬青油;鹿蹄草油 wintergreen oil | 冬油 winter oil

winterization：冬化<作用>

低溫熔化;低溫熔融 watery fusion | 冬化(作用) winterization | 冬青油;鹿蹄草油 wintergreen oil

kaolinization：高嶺土化[作用]

kapok oil 木棉子油 | kaolinization 高嶺土化<作用> | kaolinite 高嶺石

.cl：清除率

藥-時曲線下面積(AUC)最小,是碘油組的80%,清除率(CL)高于碘油組和化療組(P<0.05). 表明白芨膠有較好的緩釋作用,且其作用強于碘化油. 黎維勇等[5]研究了氟尿嘧啶白芨微球?qū)υl(fā)性肝癌患者肝動脈栓塞后的體內(nèi)藥代動力學(xué)過程,