The results show that, when the electromagnetic field was applicated, the flowability and filling capacity of cupronickel alloy are increased, the surface cracks are eliminated, and the thin-walled cupronickel tube billets with smooth surface can be obtained due to the increase of flowability and filling capacity of cupronickel alloy. The solidification structure of the tube billets is evidently refined, the shape of Ni-rich phase changes from needle-like to bulk and the casting stress declines from 7.2 to 0.32 MPa. With the structure improving, the tensile strength and elongation increase by 5% and 36%, respectively, than those of ordinary continuously cast tube billets.

結(jié)果表明：在連鑄過程中施加旋轉(zhuǎn)電磁場(chǎng)能夠提高金屬液的流動(dòng)性和充型能力韩国午夜理伦三级2020不卡，消除表面裂紋缺陷国产一乱一伦一情，從而制備出表面光滑的薄壁白銅管坯无码老熟妇色视频；在電磁力的作用下管坯凝固組織顯著細(xì)化亚洲欧美xx，富鎳相由針狀轉(zhuǎn)化為團(tuán)塊狀，同時(shí)鑄造應(yīng)力由未施加電磁場(chǎng)時(shí)的7.2 MPa下降至0.32 MPa国产精品99久久精品；隨著凝固組織的改善a片成年人黄色网站免费，施加磁場(chǎng)的管坯抗拉強(qiáng)度和伸長(zhǎng)率與未施加磁場(chǎng)管坯的相比分別提高5%和36%。

The optical source device includes a flexural luminous tube used to produce optical source and can compensate the brightness of the two ends by the flexural structure of the two ends, and a shroud component installed on flexural part of the two ends of luminous tube to defilade part of light from luminous tube.

該光源裝置包含：一彎曲燈管麻豆精品在线观看视频，用來產(chǎn)生光源国产丝袜久久久久一区二区三区，并藉由兩端的彎曲結(jié)構(gòu)補(bǔ)償兩端的亮度；以及一組遮蔽組件一级做a爱黑人又硬又粗，安裝于燈管兩端彎曲的部分位置來遮蔽該燈管的部分光線免费一级A一片在线播放无。

On tube trailers with liquefied compressed gases, gooseneck dip tubes are used, but the dip tube orientation is determined by the end of the tube trailer which is being accessed.

在裝液化壓縮氣體的管道拖車上，使用鵝頸汲取管在线免费看黄高清无码网站，但汲取管的方位由要接近的拖車的終端決定欧美在线官网。

On tube trailer s with liquefied compressed gases, gooseneck dip tubes are used, but the dip tube orientation is determined by the end of the tube trailer which is being accessed.

在裝液化壓縮氣體的管道拖車上，使用鵝頸汲取管在线观看视频欧美，但汲取管的方位由要接近的拖車的終端決定jixxjixx。

By using Whitham rule, this paper analyzes the characteristics of pressure and temperature of the oscillating gas in the conical resonance tube theoretically and explains why the conical resonance tube can reach higher temperatures than the cylindrical resonance tube.

文中利用Whitham規(guī)則，從理論上分析了在圓錐形管中振蕩氣體的壓強(qiáng)和溫度特性花季传媒免费观看网址ios。

Afterwards, the crash process of the thin-walled structure is simulated to find the effect of the cross section, the thickness and the pre-deformation on the crash capacity, and the axial impact deformation of the circinal tube is analyzed in the theoretical way, the axial impact deformation of the square tube and subulate tube are analyzed by simulation.

最后本文建立了原DF_(8B)機(jī)車車體正面碰撞剛性墻的仿真模型95日韩视频，在分析碰撞結(jié)果后，對(duì)原DF_(8B)機(jī)車車體的底架和司機(jī)室結(jié)構(gòu)進(jìn)行了改進(jìn)视色网视频在线；并利用薄壁圓管和錐形結(jié)構(gòu)設(shè)計(jì)了吸能裝置在线精品日韩一区二区美女，利用凸凹相見的防爬板設(shè)計(jì)了防爬裝置；對(duì)安裝了吸能裝置和做出結(jié)構(gòu)改進(jìn)的耐碰撞DF_(8B)機(jī)車以10m/s和15m/s速度正面撞擊剛性墻進(jìn)行仿真久久精品无码亚洲一区二区，結(jié)果表明碰撞時(shí)吸收裝置先于車體主結(jié)構(gòu)破壞5级黄色网站，吸收碰撞能量，其吸能能力達(dá)到了國外有關(guān)標(biāo)準(zhǔn)的要求黄色网站十八岁免费。

The heat release calculation by external condensation of horizontal multitube, vibration check while media transversely flow over tube bundle, ensemble rigidity pipe bundle and connecting technology of tube and tube plate ware presented in this paper.

介紹了大型加熱器的水平式多管排管外冷凝放熱計(jì)算毛片免费全部播放完整、介質(zhì)橫向流經(jīng)管束時(shí)的振動(dòng)校核、整體剛性管束以及管子與管板的連接工藝无码专区视频一区古典武侠。

The degradation of pollen tube RNA in vitro by stylar S-RNase at different temperatures was performed to detect the extent of degradation using the agarose gel electrophoresis. The germination and tube growth of self-pollen and the RNA of self-pollen tube were inhibited and degraded significantly greater than cross-pollen respectively at 10℃ and 25℃, but no significant difference when the temperature rose to 35℃.

10℃久久久久亚洲色欲AV无码裤子、25℃時(shí)，花柱S-RNase抑制自花花粉萌發(fā)和花粉管生長(zhǎng)的程度極顯著大于抑制異花花粉的程度99插插插；花柱S-RNase降解自花花粉管RNA的程度也明顯大于降解異花花粉管RNA的程度国产精品午夜激爽毛片；溫度升高到35℃時(shí)，自花和異花間花粉萌發(fā)和花粉管生長(zhǎng)被花柱S-RNase抑制的程度不存在顯著性差異日本视频中文字幕在线；花柱S-RNase降解自花和異花花粉管RNA的程度也相似欧美一级欧美三级视频在线播破处女。

Characteristics of Ten-Roll Tube Straightener;2. Ultimate strength of short steel tube-confided concrete;3. To verificate the correctness and reliability of the simulation system, a typical processing of 3 rollers stretch reducing of tube is simulated by simulation system of 3D Thermo-mechanical Couple rigid-plastic FEM.

為驗(yàn)證作者開發(fā)的&鋼管張力減徑三維熱力耦合剛塑性有限元虛擬仿真集成系統(tǒng)&的正確性和可靠性，對(duì)典型的三輥張力減徑過程進(jìn)行了模擬www.欧美专线电影，并將模擬結(jié)果與產(chǎn)品實(shí)測(cè)結(jié)果進(jìn)行對(duì)比在线观看免费播放国产一区在线，結(jié)果證明了采用有限元模擬技術(shù)能夠?yàn)殇摴軓埩p徑工藝制度制定和軋輥孔型優(yōu)化提供依據(jù)黄色网站视频免费直接看视频。

Set up the baffle plate for condensation water in tube bundle to reduce and avoid the condensate recooling by lower tube bundle in the falling process of upper tube bundle.

在管束中設(shè)置凝結(jié)水擋板，以避免和減少上部管束下落的凝結(jié)水受到下部管束的再冷卻偷拍区另类综合图片小说。