Based on the theoretical calculation model for the structural information of metal melt, the main structural information, including relative concentration of active atoms, average diameter of the atomic clusters and the number of short-range atoms inside them, was achieved. Finally, by multiple non-linear fitting of experimental data, the function about viscosity and size of atomic clusters was established.

利用金屬熔體結(jié)構(gòu)信息的理論計(jì)算模型日韩毛片无码一区二区三区，得到該溫度區(qū)間內(nèi)鋁熔體的主要結(jié)構(gòu)信息性h视频，包括激活原子的相對(duì)濃度国产精选自拍AV、原子集團(tuán)的平均直徑及其內(nèi)部包含近程原子數(shù)等黄网毛片aaa黄网毛片，最終通過實(shí)驗(yàn)數(shù)據(jù)的多次非線性擬合發(fā)現(xiàn)黏度與原子集團(tuán)的尺寸之間存在函數(shù)關(guān)系全网黄色在线看。

The results showed that the fracture toughness of the weld of HFW pipe was lowest.The value of absorbed energy of HFW weld was closely related to the heat treatment process.But the fracture toughness of fusion zone of submerged-arc welded jointer,its microstructure was coarse granular bainite,and was lower than the other locations of heat affected zone;and with the increasing of steel strength,the effect of welding heat cycles on the pipeline steel became stronger,and form coarse microstructure in fusion zone leading to decrease fracture toughness.

結(jié)果表明亚洲中日韩欧美精品一区二区，高鋼級(jí)管線鋼高頻焊接焊縫處的斷裂韌性最低，其沖擊功大小與熱處理工藝密切相關(guān)91原创自拍视频；而埋弧焊接熱影響區(qū)斷裂韌性在熔合線處最低在欧美特级方面,想看欧美特级黄片，其主要原因是此處的組織為粗大的粒狀貝氏體久免视频免费一区，而且強(qiáng)度越高焊接熱循環(huán)對(duì)管線鋼的作用越強(qiáng)，在熔合線附近更容易產(chǎn)生粗大組織豆奶APP下载入口，使斷裂韌性降低亚洲屄屄视频网站。

It was found that the microstructures of the clad layer were dispersive undissolved Cr_2O_3 particles and orbed liquid-precipitated Cr_2O_3 distributed in the...

熔覆層和基材實(shí)現(xiàn)良好冶金結(jié)合，白亮熔合區(qū)寬度為10～20μm女高中生自慰网站。激光熔覆層干滑動(dòng)摩損的摩擦系數(shù)在0.2～0.3之間亚洲免费在线观看视频，磨損率比Ti6A14V標(biāo)樣降低約4～5倍。

Bonding structure and the change of chemical composition at the Cu/ceramic interface are investigated systematically with microanalysis. Furthermore, it is observed that copper bonding to Al〓O〓 ceramic is formed by chemical reaction between Cu〓O within the Cu-Cu〓O eutectic and Al〓O〓 at high temperature, CuAlO〓 as a reaction result is produced, mechanic join and physical osmose are not the main factor.

運(yùn)用多種顯微分析技術(shù)青草国产线免费观看AV，對(duì)銅-陶瓷鍵合界面的微觀結(jié)構(gòu)欧美、日韩黄片，以及鍵合前后物相化學(xué)成份的變化，進(jìn)行了系統(tǒng)的研究欧美三p，在此基礎(chǔ)上97在线视频人妻无码一期，明確了Cu-Al〓O〓陶瓷的鍵合機(jī)理；機(jī)械交聯(lián)和物理滲透不是形成鍵合的首要因素18岁禁看的黄片，鍵合是通過Cu-Cu〓O共晶熔體中的Cu〓O相在高溫下與Al〓O〓陶瓷發(fā)生了化學(xué)反應(yīng)sesesese，形成了牢固的化學(xué)鍵合，同時(shí)伴隨有一些CuAlO〓物相的生成国内自拍av偷500拍视频。

The results of metallographical observation showed that there has the existence of eutectic remelting microstructure in heat effected area near the melting line.

金相觀察表明91精品夜夜夜一区二区，在靠近熔合線附近的熱影響區(qū)內(nèi)存在共晶復(fù)熔組織。

As flux used in light metal processing for metal surface treatment; as component in the production of aluminum-titanium-boron alloys and for the fabrication of grinding wheel and abrasive disc to reduce operating temperature; as flux used in welding; as fire retardent for cotton and artificial fibre; rodent for the removal of exposed lead in printed circuit board; chemical analytical reagent in electrochemistry; used to melt with silver, gold, stainless steel; as material to produce boron alloys.

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The samples of single building up are made of the same we lding procedure in DT3, 20, 45, T8 style steel. The result shows, the bond of lo w carbon base-material consists of smooth white light zone and needle-like l ayer of Martensite, the bond of medium and high base-material consists of sawt ooth structure and unmixed zone, and in medium c...

實(shí)驗(yàn)結(jié)果表明：低碳鋼母材接頭熔合區(qū)由較平整的白亮帶和針狀類馬氏體層組成；中级特大黄片视频影院春色、高碳鋼母材接頭熔合區(qū)由&鋸齒形&組織和不完全混合區(qū)組成97cao在线播放，其中，中碳鋼母材接頭的不完全混合區(qū)組織為類馬氏體鸥美性爱操逼视频，高碳鋼母材接頭不完全混合區(qū)類馬氏體層消失人人干人人爱人人插，為奧氏體。

Torque rheometer with an internal mixer is commenly applied to study the property of PVC in polymer laboratory. Compounding temperature、rotor speed国产精品热门Jizz最近更新、and totalized torque are three main influence factors to affect the fusion of PVC in a torque rheometer.

力矩流變儀(To-rque Rheometer)配備內(nèi)部混合器是一般高分子加工實(shí)驗(yàn)室常用的PVC混練儀器在线观看免费毛片高清，而此儀器影響PVC熔合最主要的混練因素為混練溫度、轉(zhuǎn)軸轉(zhuǎn)速及力矩總和(Totalized Torque人人摸'人人操人人；簡(jiǎn)稱TTQ)黄色网站动，本文應(yīng)用一個(gè)2的3次方因次實(shí)驗(yàn)設(shè)計(jì)法來判定上述三個(gè)混練因素對(duì)PVC熔合之影響程度。

Finally, in 1984, a project named Nova produced 30,000 joules, and it was the first time its creators actually believed there was a chance of fusion.

最后一項(xiàng)實(shí)驗(yàn)在1984年實(shí)施久久精品国产字幕AV，這個(gè)被稱作Nova的激光熔合項(xiàng)目產(chǎn)生了30000焦耳能量这里全是是精品99，這也是它的制造者第一次相信通過這種方法可以實(shí)現(xiàn)核子熔合。

By using quantum statistics,this paper obtains the calculation formula of entropy of phonons and initial results,and points out that the entropy of phonons plays an important role in the associated reaction of two kinds of anion structural groups in silicate melts.

熔體陰離子結(jié)構(gòu)團(tuán)締合過程中聲子熵的研究何安明李秉新石煥文（西安地質(zhì)學(xué)院天天插天天狠天天透伊人，西安710054）關(guān)鍵詞熔體陰離子結(jié)構(gòu)團(tuán)締合聲子熵近年來三级黄色黄页网站，中外學(xué)者已經(jīng)開始重視對(duì)巖漿熔體的物理過程和機(jī)制（如利用喇曼光譜直接測(cè)定硅酸鹽熔漿的結(jié)構(gòu)等）的研究工作，并取得了重要進(jìn)展AV无码永久免费网站。