Sulfide layer was made on the surface of high speed steel (W6Mo5Cr4V2) by means of low temperature ion sulfurization. The tribological properties of the sulfide layer under dry sliding were investigated on an MM 200 friction and wear test rig. An atomic force microscope and a scanning electron microscope equipped with an energy dispersive spectrometer attachment were adopted to analyze the morphologies and compositions of the original and worn surfaces of the sulfide layer. The phase structure of the sulfide layer was determined by X ray diffraction.

采用低溫離子滲硫工藝在 W6 Mo5 Cr4 V2高速鋼表面制備了硫化物固體潤(rùn)滑層日韩激情无码一区二区三区91，在 MM- 2 0 0型摩擦磨損試驗(yàn)機(jī)上對(duì)滲硫?qū)拥哪Σ翆W(xué)性能進(jìn)行了干摩擦試驗(yàn)研究，用原子力顯微鏡及掃描電子顯微鏡和 X射線光電子能譜分析滲層表面欧美精品无遮挡、截面一级又黄又粗毛片视频、磨面的形貌及成分，用 X射線衍射儀分析了滲硫?qū)酉嘟Y(jié)構(gòu)亚洲性爱视频网址。

Objective To study the pathogenesis and clinical symptoms of patient with central type of interˉvertebral disc protrusion manifested intermittent claudication as the mainly clinical presentation,so as to reach the early diagnosis and treamtmet in time.Methods In58cases,X-ray film,lumbar discography,CT examinations were done to confirm the diagnosis,then total laminectomig was performed to reveal the vertebal body without involving small arˉticular process.Intervertebral tissue was excised via duralotomy approach in2cases in remaining56cases,through right and left longitudinal syndesmotomy to resect the nucleus pulposus of lumber intervertebral disc.Results In58cases treated by operation,the operative findings were in according with the X-ray and CT examinations ofpre-opˉeration.

目的 對(duì)呈間歇性跛行主要臨床表現(xiàn)的中央型椎間盤(pán)突出癥患者的發(fā)病機(jī)制和臨床表現(xiàn)進(jìn)行研究欧美刺激a片影院，達(dá)到早診斷、早治療方法對(duì)58例患者進(jìn)行X線拍片26uuu欧美日韩国产，腰椎碘造影A级黄色片在线免费观看，CT掃描檢查，根據(jù)檢查結(jié)果確診后国产综合亚洲欧美日韩一区，采用全椎板切除顯露椎體美女裸体扒开尿口桶到爽动态图，未累及小關(guān)節(jié)突，2例經(jīng)硬膜切開(kāi)入路切除間盤(pán)組織999国产在线视频，余56例經(jīng)從雙側(cè)用神經(jīng)剝離子帶棉片將硬脊膜帶神經(jīng)根向中線剝拉至顯露圓形突出物止久久riAV一区二区三区，分別從左右縱韌帶摘除髓核。

Methods In58cases,X-ray film,lumbar discography,CT examinations were done to confirm the diagnosis,then total laminectomig was performed to reveal the vertebal body without involving small arˉticular process.Intervertebral tissue was excised via duralotomy approach in2cases in remaining56cases,through right and left longitudinal syndesmotomy to resect the nucleus pulposus of lumber intervertebral disc.Results In58cases treated by operation,the operative findings were in according with the X-ray and CT examinations ofpre-opˉeration.

對(duì)58例患者進(jìn)行X線拍片玖玖草视频，腰椎碘造影国产变态一级A片，CT掃描檢查，根據(jù)檢查結(jié)果確診后老熟熟女一区二区三区，采用全椎板切除顯露椎體级特大黄片视频影院国产一级特，未累及小關(guān)節(jié)突，2例經(jīng)硬膜切開(kāi)入路切除間盤(pán)組織亚洲黄色视频无码免费在线观看，余56例經(jīng)從雙側(cè)用神經(jīng)剝離子帶棉片將硬脊膜帶神經(jīng)根向中線剝拉至顯露圓形突出物止欧美精品A片视频，分別從左右縱韌帶摘除髓核。

A tachymeter is simply a means of converting elapsed time in seconds per X to X per hour .

只不過(guò)是一種手段4455免费视频在线观看，轉(zhuǎn)換的時(shí)間過(guò)去了XXXX丰满老熟妇，在幾秒鐘百分之十的x ％小時(shí)

Objective To evaluate the influence of ankle positioning On X-ray diagnosis of the Tibiofibular syndesmosis Injury.

中文摘要：目的：評(píng)估踝關(guān)節(jié)體位對(duì)下脛腓聯(lián)合損傷X線診斷的影響，改善下脛腓聯(lián)合損傷的X線診斷污国产在线观看。

RESULTS: After six weeks of implantation, x-ray film showed high-density signal, osteoid tissue formed under histological examination. Large amount of new bone were formed and connected to trabecularism 8 weeks after implantation in the experimental group.

結(jié)果 實(shí)驗(yàn)組6 周時(shí)大體標(biāo)本淺紅色综合激情图区， X 線片有較高密度阻射影像，組織學(xué)檢查可見(jiàn)有新骨形成国产野战无套Aⅴ毛片； 8 周時(shí)大體標(biāo)本呈紅色欧美熟妇A片一级人A片一级，質(zhì)硬， X 線阻射影像密度更高色哟哟专区在线观看，鏡下可見(jiàn)大量新骨形成并相互連接成骨小梁樣結(jié)構(gòu)国产在线视频套图，骨細(xì)胞位于陷窩中。

The temperature for crystallization obtained by differential scanning calorimetry is 193.92 ℃. The undeposited AgInSbTe is amorphous by the measurement of X-ray diffraction, while the phase change film is heated at 200 ℃, the peak could be observed by XRD, which indicated that the amorphous state had become a crystalline state.

示差掃描量熱實(shí)驗(yàn)測(cè)定的結(jié)晶峰溫度為193.92 ℃国产精品熟女30p。X射線衍射表明未經(jīng)熱處理的沉積態(tài)薄膜是非晶態(tài)色色色校区，而經(jīng)過(guò)200 ℃熱處理，X射線衍射圖出現(xiàn)衍射峰99riav6，薄膜從非晶態(tài)轉(zhuǎn)變到晶態(tài)欧美人与拘牲交。

The effect of HgCdTe composition ununiformity on X-ray reflectivities is studied.

用X射線動(dòng)力學(xué)理論研究了組分不均勻?qū)gCdTe材料X射線反射率的影響国产精品99久久久久久久www。

In this paper, the effects of the rigid body motions and low frequency surface errors on the image quality were analyzed. Quadratic equations were used to build the mathematical model of the Wolter type I and II X-ray telescopes and reduce the computational complexity of ray tracing. With the help of a self-developed optical surface analysis code, the effects of the perturbations of the mirrors on the image quality was analyzed and the growth of the image spot formed by deformed telescopes was calculated, this is important for giving the reasonable fabrication tolerance.

在本篇文章中，詳細(xì)分析了剛體運(yùn)動(dòng)誤差和低頻表面誤差對(duì)成像質(zhì)量的影響亚洲无码第2页；使用空間解析幾何學(xué)的二次曲面方程建立Wolter IA级黄色视频免费、II型X射線掠入射望遠(yuǎn)鏡鏡片的數(shù)學(xué)模型，降低光線追蹤的計(jì)算復(fù)雜度毛茸茸屄；借助自主開(kāi)發(fā)的光學(xué)仿真軟件分析了國(guó)內(nèi)研制的X射線成像望遠(yuǎn)鏡的剛體運(yùn)動(dòng)誤差和低頻表面誤差對(duì)成像質(zhì)量的影響α级片网站，計(jì)算出像點(diǎn)艾里斑半徑均方根值隨誤差變化的增長(zhǎng)率在线播放视频国产自区，對(duì)工程上提出合理的制造公差的誤差容限有重要的指導(dǎo)意義久久91这里精品国产调教。

A tomograph that produces cross-sectional X-rays of metabolic processes in the body.

能在身體內(nèi)部產(chǎn)生橫截的x光代謝的過(guò)程的斷層x光攝影裝置。