Department of Scientific History and Archaeometry; Graduate University of Chinese Academy of Sciences; Beijing 100049;4.Institute of Archaeology; Chinese Academy of Social Sciences; Beijing 100710; China;The fabrication technologies in terms of phase composition,structure,firing temperature,porosity,density and water permeability of ceramic water pipes and contrastive ceramic tilesexcavated from Anyang Yin Ruins of Shang dynasty were studied by X-ray fluorescence,X-ray diffraction and dilatometer,respectively.It was found that the contents of CaO,K2O,MgO and P2O5 in CWP were relatively higher than those in contrastive CT.The difference was further confirmed by the mass ratio of flux...

采用X射線熒光、X射線衍射在线观看中文字幕小说区、熱膨脹等分析手段對(duì)比研究了安陽(yáng)商代陶水管的制作工藝，發(fā)現(xiàn)陶水管化學(xué)成分中各類熔劑的質(zhì)量分?jǐn)?shù)均略高于對(duì)比陶片中熔劑的質(zhì)量分?jǐn)?shù)，CaO成年人在线观看的视频网页、K2O、MgO等助熔劑與A l2O3的質(zhì)量比進(jìn)一步證實(shí)該現(xiàn)象好大好粗好硬，而這種差異性則外在地表現(xiàn)為陶水管的氣孔度低于對(duì)比陶片以及陶水管熱膨脹曲線中出現(xiàn)玻璃化現(xiàn)象欧美黄色一区二区三区啊A片，該結(jié)果表明陶水管原料應(yīng)為一種易熔粘土，或者在沉淀粘土中人為地?fù)胶土瞬菽净翌悡胶土瞎穒GAO视频免费，這有利于陶水管燒制與成型国产合集，有助于熔劑在熔融狀態(tài)下，較好地進(jìn)入陶水管中的空隙东南亚高清无码视频，使陶水管變得更加致密超碰97人妻在线，一定程度上有利于防止陶水管的滲水，顯示出陶水管制作工藝的特殊性资源站先锋。

According to the heterogeneous migmatite and granite of South and North Dabie Blocks, and the formula △h=h which was inferred in this paper, the melting of metamorphio rock might make NB uplift about 4. 4km, but SB only about 1. 9km. Therefore, the difference of melting degree of metamorphic rocks of NB and SB led to the volume different, and this could be one of the reasons of different uplift of NB and SB.

根據(jù)南18在线观看黄片、北大別地塊混合巖、花崗巖分布不均勻的特點(diǎn)和本文推導(dǎo)的公式Δh=h(〓-1)估算表明人人操人人插人人摸人人人人玩，變質(zhì)巖的熔融可使北大別地塊隆升幅度達(dá)4.4km亚洲毛片无码一区二区，而南大別隆升幅度僅為1.9km，因此亚洲免费每日在线观看一级性生活片，南午夜国产性爱影视在线超黄超污A片、北大別變質(zhì)巖熔融程度差異所引起體積變化的不同一本导一区av，可能是南、北大別地塊差異隆升的原因之一特黄一区黄片。

Distant effect of Jurassic collisions of Qiangtang terrane,Lasa terrane and Paleo\|Pacific land onto the Eurasian land made East Qinling\|Dabie Mountains in a compressional circumstance for a long time,and suppressed its orogenic extension;whereas,Cretaceous late\|collisional extension and appearance of West Pacific trench\|arc\|basin system relieved East Qinling\|Dabie Mountains of external compression,instantly result in violent orogenic lithosphere delamination\|extension and depressurized\|calefactive melting,and consequently,led to the formation of large scale Early Cretaceous granitoids and intermediate\|acidic volcanic rocks.

羌塘地體天天日天天干天天摸、拉薩地體和西太平洋古陸在侏羅紀(jì)與歐亞大陸拼貼碰撞的遠(yuǎn)距離效應(yīng)使東秦嶺-大別造山帶長(zhǎng)期處于擠壓環(huán)境，伸展作用被抑制日韩午夜一级毛片；白堊紀(jì)的碰撞晚期伸展和西太平洋溝弧盆體系的遠(yuǎn)距離效應(yīng)使東秦嶺-大別地區(qū)的外部擠壓消失亚洲日本在线看片，導(dǎo)致造山帶巖石圈迅速?gòu)?qiáng)烈拆沉伸展和減壓增溫熔融，從而形成大規(guī)模早白堊世花崗巖類和中酸性火山巖干少妇33P图。

Based on the regional tectonic evolution, combined with the high precision isotopic ages from this paper and other geologists, we have some new acquaintances as follows: 1 There has no Caledonian granite belt distributed in north margin of North China Craton. So, the traditional evolving model of North China Carton, which formed on this idea and the acquaintance about the collision of North China plate and Siberian plate, must be incorrect; 2 The age date show that the earliest magmatic activity began since late-Palaeozoic Permian, which is inconsistent with the previous idea that there were Caledonian and Hercynian active continental margin in the north of North China Craton and in the south Xingkai Massif. 3 the crust and lithosphere were thickened by the subduction and collision of Siberia plate and North China plate during Late Paleozoic. The magma is formed when the crust is heated and melts caused by thickened lithosphere delamination and caused the Asthenosphere upwelling. But only a little basaltic magma erupted, most magma underplate under the bottom of the crust. Thermal energy derived from basaltic magma underplating made the middle and lower crust melt partially and the late Permian-early Triassic granites is formed in large scale.

根據(jù)區(qū)域構(gòu)造演化分析国产一级一区真人无码播放视频，并結(jié)合本文及他人高精度同位素年齡，我們對(duì)延邊花崗巖形成的大地構(gòu)造環(huán)境有了新的認(rèn)識(shí)：1在華北地臺(tái)北緣并不存在所謂的加里東花崗巖帶美女视频网址，因此久久久久一级精品免费观看，建立在此之上的傳統(tǒng)的華北地臺(tái)北緣演化模式及有關(guān)西伯利亞板塊與華北板塊的碰撞拼合的認(rèn)識(shí)也必然是不正確的；2華北地臺(tái)北緣和興凱地塊南緣不存在加里東期和海西期花崗巖帶色一鲁中文字幕，表明兩地塊邊緣最早的花崗質(zhì)巖漿活動(dòng)始于晚古生代的二疊紀(jì)九九九在线精品视频，即不存在傳統(tǒng)觀點(diǎn)所認(rèn)為的加里東期或海西期活動(dòng)陸緣；3晚古生代由于西伯利亞板塊與華北板塊的俯沖碰撞中国无毛黄色视频，致使地殼和巖石圈增厚国产馆在线观看，導(dǎo)致加厚巖石圈發(fā)生拆沉作用，使得軟流圈上涌在线你懂得，加熱地殼使之熔融形成巖漿久草手机视频在线观看，但玄武質(zhì)巖漿少量噴出地表，大部分底侵于地殼底部人人玩人人添人人澡欧美，形成下地殼高密度的玄武質(zhì)底侵層黄色一级片一，玄武質(zhì)巖漿底侵的熱能引起中下地殼廣泛部分熔融，形成大面積分布的晚二疊世—早三疊世花崗巖羞羞自拍无码视频在线观看中文字幕。

The uniphase C with W/≤0.3 can be synthesized without being preheated. When W/ is higher than 0.3, the sample expansion increases with the increase of W content, the reaction between W and C is incomplete, the combustion products consist of W〓C, WC, TiC, C, and unreacted W. Preheating mixtures can accelerate the completion of the reaction among Ti, W, and C. The uniphase C with W/=0.4 can be synthesized by SHS at preheat temperature of 600℃. There are two kinds of powders with size of 2-4μm and size less than 1μm in the combustion products.

通過(guò)燃燒前沿激冷淬熄試驗(yàn)及產(chǎn)物形貌特征（燃燒塊斷面組織和產(chǎn)物多晶聚合體顆粒）分析凹凸视频天堂不卡在线观看，創(chuàng)新性地提出了兩種體系的自蔓延高溫反應(yīng)機(jī)制。1熔化—溶解—析出機(jī)制：當(dāng)燃燒溫度較高時(shí)黄免费观线看，燃燒前沿Ti粉熔化在线观看精品17页免费视频，W和C溶解于熔融Ti里，而后C從熔融里析出精品中文字幕一区二区三区四区。2擴(kuò)散—固溶機(jī)制：當(dāng)燃燒溫度不足以使燃燒前沿Ti粉熔化時(shí)狼友在线精品视频在线观看，通過(guò)C的擴(kuò)散先形成TiC層，其后C沿著熱應(yīng)力導(dǎo)致的TiC層裂紋繼續(xù)擴(kuò)散亚洲热在线观看，與固態(tài)Ti核反應(yīng)生成TiC人人操人人干干人人操人人；同時(shí)，C擴(kuò)散至W顆粒激情文学欧美图片乱伦，形成W〓C欧美一次性爱，而后通過(guò)C的繼續(xù)擴(kuò)散W〓C轉(zhuǎn)變成WC在线视频亚洲日韩；與此同時(shí)，WC固溶至TiC里男女爽插视频，形成C固溶體国产成年精品,免费视频大全。

Although most studies dealing with the modification of semi-crystalline polymers with inorganic particles reported embrittling effects by comparing ultimate elongation and impact strength of composites materials with those unfilled resins, some researchers showed that the enhancement of toughness in rigid particle filled polypropylene and polyethylene, in which high filler content is generally required (the volume fraction is about 20%).

然而，由于納米粒子極易聚集的特性和聚合物熔融狀態(tài)下呈現(xiàn)的高粘度性質(zhì)亚洲白白发布，使采用常規(guī)的熔融共混技術(shù)制備均勻分散的納米復(fù)合材料變得極其困難日本最新免费二区三区。

The forming process for the high-strength, steel-base modified polyformaldehyde composite material in five-laver structure is to melt modified polyformaldehyde by heating and roll to make the melt polyformaldehyde permeate into the gaps gaps between the large-grained spherical copper powder and screw copper nails.

四層結(jié)構(gòu)的鋼基銅塑復(fù)合材料的成型過(guò)程，是將改性聚甲醛加熱熔化又黄又湿的网站，經(jīng)軋制欧洲A片视频在线观看，使熔融的聚甲醛滲透到大顆粒球形銅粉的間隙中，解決了三層材料復(fù)合過(guò)程中av网站在线免费，熔融的聚甲醛水平流動(dòng)性強(qiáng)過(guò)垂直方向的滲透性免费操逼漫画，造成了結(jié)合強(qiáng)度低的缺陷，使聚甲醛層與銅粉及基體結(jié)合更牢固影音先锋图片资源专区，提高了其承載和抗剪切的能力亚洲www日本。

The forming process for the high-strength, steel-base modified polyformaldehyde composite material in five-layer structure is to melt modified polyformaldehyde by heating and roll to make the melt polyformaldehyde permeate into the gaps between the large-grained spherical copper powder and screw copper nails.

五層結(jié)構(gòu)的高強(qiáng)度鋼基改性聚甲醛復(fù)合材料的成型過(guò)程，是將改性聚甲醛加熱熔化日本理论电影A片中文字幕网站，經(jīng)軋制天堂国产av片，使熔融的聚甲醛滲透到大顆粒球形銅粉的間隙中，解決了三層材料復(fù)合過(guò)程中成人黄色视频免费播放，熔融的聚甲醛水平流動(dòng)性遠(yuǎn)強(qiáng)過(guò)垂直方向的滲透性，造成了結(jié)合強(qiáng)度低的缺陷欧美熟妇性生活，使聚甲醛層與銅粉日韩精品无码区免费专区、螺旋銅釘及基體結(jié)合更牢固，提高了其承載和抗剪切的能力日韩一区二区黄色视频。

The forming process for the high-strength, steel-base modified polyformaldehyde composite material in five-layer structure is to melt modified polyformaldehyde by heating and roll to make the melt polyformaldehyde permeate into the gaps between the large-grained spherical copper powder and screw copper nails.

五層結(jié)構(gòu)的高強(qiáng)度鋼基改性聚甲醛復(fù)合材料的成型過(guò)程国产三级a专区在线观看播放，是將改性聚甲醛加熱熔化，經(jīng)軋制狠狠操人人操人人干，使熔融的聚甲醛滲透到大顆粒球形銅粉與螺旋銅釘?shù)拈g隙中日欧美老女人，解決了三層材料復(fù)合過(guò)程中，熔融的聚甲醛水平流動(dòng)性遠(yuǎn)強(qiáng)過(guò)垂直方向的滲透性人人操人人看人人搞，造成了結(jié)合強(qiáng)度低的缺陷真人版AV黄色网站，使聚甲醛層與銅粉、螺旋銅釘及基體結(jié)合更牢固国产黄色在线观看q，提高了其承載和抗剪切的能力大黄色一级片。

The thesis are divided into two parts. In the first part, we used 2,4,6-trichloro-1,3,5-triazine as the precursor to react with sodium which have been achieved by decomposing sodium hydrate at 623 K. At a low reaction temperature of 623 K, carbon nitride nanosphere、porous carbon nitride material and byproduct sodium chloride, would be produced.

本研究將分成兩部份色三级视频在线视频，第一部分是在低溫下(623 K)將氫化鈉粉末熱裂解欧美老妇乱子伦在线，生成表面積較大的熔融態(tài)金屬鈉欧美性一级a视频一级a视频，使氣態(tài)的氰尿醯氯通入與熔融態(tài)金屬鈉在623 K反應(yīng)，生成奈米氮化碳球自拍高潮日韩在线观看网站大全视频、奈米孔洞性氮化碳材料及副產(chǎn)物氯化鈉国产精品电影久久久久电影院。