The authors analysed naked and transformed groups of fibrous brucite, wollastonite, chrysotile asbestos, sepiolite, palygorskite, clinoptilolite, crocidolite and diatomaceous earth mineral dust s by IR under acid and alkali etching and strong mechanical and polarized molecular interaction.

本文通過酸堿蝕黄色视频免费观看视频网站、強(qiáng)機(jī)械力和極性分子等表面作用，利用紅外吸收光譜手段分析7種重要礦物粉塵的表面基團(tuán)裸露伊人久久五月丁香综合中文亚洲、轉(zhuǎn)化過程亚洲第一天堂avwww网站，總結(jié)了礦物粉塵表面存在的基團(tuán)類型及其表面活性位的分布及在不同環(huán)境條件下的轉(zhuǎn)化，對討論粉塵生物活性及礦物表面／細(xì)胞物理化學(xué)作用過程有重要意義思思热视频在线精品视频。

The discrete random height variable of worn surface is described with continuous random variables by a mathematical method.

建立了磨損表面輪廓數(shù)值化基準(zhǔn)日韩专区综合第二页、用連續(xù)隨機(jī)變量來描述磨損表面輪廓線高度離散隨機(jī)變量，對磨損表面高度分布作了數(shù)理統(tǒng)計分析男女互搞黄色网站，研究了載荷欧美一级大片久久蜜视频、滑動速度及鍍層種類對磨損表面幾何特性的影響，將數(shù)理統(tǒng)計分析結(jié)果與鍍層的耐磨性作了比較分析日韩网络福利直播网站，較為完整国产视频精品网、深入地描述了磨損表面的幾何特性。

The results show that the microstructure of ventra1 scale for python was composed of micro-convex and plank structure that was periodically arranged, it was mensurable and could be described by 9 characteristic parameters. Its surface was different in their forward and backward lean angle. The frictional coefficient of the ventra1 scale had closely relationship with moving direction, it decreased with the increasing load. The value of the frictional coefficient was about 0.07. The frictional coefficient while python moved backward and laterally were equal, and that was 33% more than that moved ahead. The frictional force of the ventra1 scale surface was caused by mechanical tooth function of micro-convex, acting intermolecular force and material's elastic hysteresis. The difference of forward and behind bevel for micro-convex was the anisotropy reason of frictional force.

結(jié)果表明：腹鱗表面的微觀結(jié)構(gòu)由指狀微突體和板結(jié)構(gòu)部分周期排列而成呦呦网，其結(jié)構(gòu)可用9個特征參數(shù)定量描述日韩福利午夜免费无码AV；腹鱗表面摩擦力由分子作用力、表面微突體的犁溝力古代一级无遮A级毛片久久、楔形作用力以及材料彈性滯后共同引起免费黄色在线网站91；腹鱗表面的摩擦系數(shù)在0.07左右并與運(yùn)動方向有關(guān)，摩擦系數(shù)隨載荷增加而減泄鶤级毛多水多妇女视频∏锵?17电影；后向運(yùn)動及左、右側(cè)向運(yùn)動時摩擦系數(shù)基本相等，比前向運(yùn)動時高33%左右国内精品在线观看；腹鱗表面微突體不同方向上傾斜角度的差異是引起摩擦各向異性的主要原因人人操人人摸人人干五月。

Being different from conventional multimolecular micelle systems, the unimolecular micelle system of P(AMC14AB) not only shows critical micellar concentration (CMC=0),(i.e.once added to pure water, the surface tension decreases immediately in spite how small the density is), but also the surface tension stays almost the same with the concentration increasing.

P(AMC14AB)在溶液表面也發(fā)生表面吸附，使水的表面張力下降2av天堂网在线观看，即P(AMC14AB)也具有表面活性人人鲁人人干人人操；隨著濃度增大，表面吸附量增大91人妻精品一区，水的表面張力持續(xù)下降国产原创在线导航视频在线观看网站；當(dāng)表面吸附達(dá)飽和時，表面張力～濃度曲線上出現(xiàn)突變點(diǎn)最近2019中文字幕大全，該點(diǎn)定義為飽和的表面吸附濃度WWW、884aa，而不應(yīng)該再稱為臨界膠束濃度。

After this research work, we know that: HMCM-22 is a better catalyst of selecting naphthalene alkylation; Surface modification of zeolite Y is effective, but the effect of zeolite 3 is not evident and surface modification doesn"t suits mordenite; Surface modification doesn"t affect the frameworks and inner environments of zeolites, but only reduces diameter of orifice and overlays surface acidities; t-butanol is not suitable for alkylating agent of the reaction using modified zeolites as catalyst; Solvents with smaller molecular size are advantageous for naphthalene alkylation reaction using modified zeolites as catalyst, such as cyclohexane is better than decalin.

通過本論文的研究中文字幕在线一道本，我們知道：HMCM-22是萘擇形烷基化反應(yīng)較好的沸石之一最新色黄色网址；Y沸石的外表面改性效果較好，β沸石則效果不明顯中文字幕丝袜日韩第一页，而絲光沸石則不適于外表面改性亚洲综合网色五月；外表面改性不改變沸石的骨架結(jié)構(gòu)和孔道內(nèi)部環(huán)境，僅減小孔口直徑和覆蓋外表面酸性位亚洲中文久久久久久精品国产视色；叔丁醇不適于作外表面改性沸石催化的反應(yīng)的烷基化試劑狠狠婷婷五月综合，其反應(yīng)活性很低，且選擇性無明顯提升自拍三级青草；分子較小的溶劑更適于外表面改性沸石催化的反應(yīng)在线青草草永久视频免费播放，環(huán)己烷就明顯好于十氫萘。

By thermodynamically and dynamically calculating and analysing ,a new growth mechanism of spherical graphite has been proposed ,that is,the spherical graphite does not grow inwardly,but grow outwardly and when spherical graphite grow outwardly carbon atoms come into and fill-up the entocoele of spherical graphite by the diffusing way.

通過對石墨球最終表面的形態(tài)進(jìn)行分析777久久激情久久综合，可以獲得氣泡的表面并不是石墨球的最終表面在线免费看视频黄，石墨球表面主要由于受到石墨球表面各微晶長大速度不均勻性、鐵水中的三大起伏免费看所有乱伦黄色视频、微量元素與碳原子的竟相吸附激情黄色网址、由于濃度梯度和溫度梯度所引起鐵水的對流等各種因素的綜合影響結(jié)果使其表面成為凹凸起伏的形狀

Three part of research works had been carried out in the dissertation. The first part: a kind of multidentate amine modified silica gel was synthesized through the following steps:(1) introduce the amino groups onto the surface of silica-gel by the treatment of surface silanol groups withγ-aminopropyl trimethoxy silane;(2) michael addition of excess trihydroxymethyl propyl triacrylate to amino groups on the silica gel surface;(3) amidation of the unreacted double bonds of TMPTA on the surface of TMPTA modified silica gel with diethylenetriamine;(4) the multidentate amine modified silica gel was finally obtained by the reaction of amino groups on the surface of DETA modified silica gel with double bond of butyl acrylate.

本論文進(jìn)行了三部分研究工作，第一部分：通過多步反應(yīng)對硅膠進(jìn)行改性合成了一種多齒胺改性硅膠配體在线视频一区二区国产日韩欧美，合成過程如下：1通過γ-氨丙基三甲氧基硅烷與硅膠表面的硅羥基反應(yīng)激情文学无码中文字幕yw，使硅膠表面帶有氨基；2利用硅膠表面氨基與過量的三羥甲基丙烷三丙烯酸酯發(fā)生Michael加成反應(yīng)黄色视频免费观看一区二区；3利用二乙烯三胺與TMPTA改性硅膠表面未反應(yīng)的雙鍵發(fā)生反應(yīng)使硅膠表面氨基化4a级黄色片；4最后用丙烯酸正丁酯與DETA改性硅膠表面氨基充分反應(yīng)成功合多齒胺改性硅膠配體。

The numerical results of stationary and transient Green'sfunction for high-velocity surface-head wave on some selected crystals are comparedThrough the above analyse,it is indicate that the first arrival wave mode is thelongitudinal-wave head-wave,and its propagate velocity is equal to the groupvelocity of the longitudinal bulk wave alone the surface.Furthermore,this modedoes not have the Δv/v effect,i.e.,its velocity is the same no matter the surface isfree or metalized.

通過對表面激發(fā)的瞬態(tài)和穩(wěn)態(tài)Green理論分析和數(shù)值計算日批国产，表明在壓電晶體表面上實(shí)際上看到的最高速的最先到達(dá)的波動模式是縱波頭波亚洲一区无毛片免费在线观看，它具有沿表面縱波的群速度，而且對壓電晶體，它不具有Δv/v效應(yīng)中文字幕精品一区在线，即在自由表面和金屬化表面其傳播速度是一樣的日本42999性爱A片在线，而壓電晶體表面波及偽表面波均存在Δv/v效應(yīng)。

The roughness shape of ceramic machining surface is analysed by four kinds of test methods: surface profile, scanning electron microanalyses, bearing ratio curve and profile ratio of peak to valley. Ceramics are machined by"plateau honing"to obtain the plateau property and wearability of machining surface. The machining surfaces own its functional surface.

采用表面微觀輪廓第一第二区免费视频、掃描電鏡觀察http://wwW.色色.com、表面支承長度率曲線以及表面輪廓峰谷比等四種研究方法，詳盡分析了陶瓷材料加工表面的輪廓形狀特征男女动态视频操，并采用平頂珩磨加工方法国产精品第一夜不卡丝袜，獲得陶瓷加工表面的平頂特性，提高了加工表面耐磨性欧美中文字幕观看。

A series of erosion-corrosion test has been done to J55 steel under the influence of current of gas-liquid phase by indoor self-made devices, and the corrosion mechanism of current of gas-liquid phase to oil pipe's inner surface has been got. The results show that oil pipe's inner surface will be corroded fleetly by liquid medium and corrosion products will form on it. But at the same time, the corrosion products or protective layer will be removed from the inner surface of steel pipes under the alternate impact of high speed gas and liquid flow, and on this bare steel surface corrosion film will form again and be removed again. Thus, by these ways the corrosion is exacerbated. Surface erosion-corrosion failure comes into being with the circulation of this process going on.

本文主要在氣液兩相流作用條件下又粗又长的黄A片无码视频，通過室內(nèi)自制裝置，對管材鋼J55做了系列沖刷-腐蝕試驗(yàn)国产午夜激无码AV毛片不卡国，結(jié)果表明求可以在线观看的不卡的黄色av网站，氣液兩相流對鋼管內(nèi)表面沖刷－腐蝕的機(jī)理是鋼管內(nèi)表面會受到液體介質(zhì)的快速腐蝕，生成腐蝕產(chǎn)物看片色色，同時鋼管金屬表面不斷被具有高流速的氣液相交替地沖擊曰本黄色视频免费观看，不斷地從金屬表面脫去保護(hù)膜或腐蝕產(chǎn)物，裸露的鋼表面又會被介質(zhì)快速腐蝕形成腐蝕膜后一道本在视频线高清无码，再被兩相流沖掉国产强奸视频大全，如此反復(fù)，造成管內(nèi)金屬表面膜的連續(xù)破壞欧美性free，使腐蝕加劇，最終導(dǎo)致鋼鐵表面的沖刷腐蝕失效亚洲中文AⅤ中文字幕在线。