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With the filling nitrogen of 0.9 MPa, the maximal pressure ratio reaches 1.21 and the operation frequency is 25 Hz. The ratio of the harmonic wave of the engine was very little and the frequency jumping was not found in present experiments.

在充气压力为0.9MPa的条件下,该热声发动机最大压比可达1.21,远高于驻波型热声发动机,实验结果和理论分析均表明系统的工作频率为25Hz左右,实验装置的谐波比例非常小,且也没发现频率跳变等现象。

This article describes the conditions of production and application of middle and small-sized RE-Mg ductile iron ingot mold during the last three years, and gives main properties of these ingot molds mechanic properties at room and high temperatures, resistance to oxidation and thermal fatigue, critical phase transformation temperatures and coefficient of thermal expansion,etc.

本文介绍了三年来采用稀土镁球铁材质制造中、小型钢锭模的生产试制和使用情况。报导了此种钢锭模的主要性能(常温与高温机械性能、抗氧化与热疲劳性能、临界相变点与热膨胀系数等)和表示出机械性能与化学成分间相互关系的回归方程。

Longitudinal wave and thermal membrane programs of osteoarthritis kneepad can delay degeneration of cartilage macroscopic morphology, chondrocyte and cartilage matrix. Moreover, its effect is superior over microwave treatment, electricity or thermal membrane treatment alone.

治疗型关节炎护膝的疏密波+热软膜程序能延缓膝关节软骨宏观形态、软骨细胞及软骨基质的退变,效果优于微波仪治疗或单纯的疏密波、热软膜治疗。

It belonged to their heroine Rebiya Kadeer, the laundress turned mogul who had become beloved after she began to speak out against China's treatment of the Uygurs. In 1999, as an American delegation arrived in China to meet Kadeer, security officers arrested her.

它曾属于他们的女英雄热比娅,这位从洗衣女工成为商界大亨的女性在她开始呼吁反对维吾尔人遭受到的中国的对待后变得备受敬爱。1999年,由于一个美国代表团来到中国要会见热比娅,安全人员逮捕了她。

Our model can well fit the flattening of bolometric light curve after day 800 and the bolometric light bump.

我们的模型可以很好地拟合800天以后热光度曲线的下降变缓,并首次定量地给出热光度鼓包的解释。

The ore is characterized by veinlet structure, net-veined structure and comb structure, and the gradual outward transformation of ore structure from veined via net-veined and veinlet-disseminated to disseminated is common. These characteristics in ore fabrics and the occurrence of cryptoexplosive breccia are strong evidences that Songxi Ag-Sb deposit is a hydrothermal deposit.

矿体中发育大量的脉状、细脉状、网脉状和梳状等充填交代构造,由矿体向围岩常可见脉状→网脉状→细脉浸染状→蚀变围岩的渐变过渡现象,这些构造特征以及热液破碎角砾岩的出现,为嵩溪银锑矿床的浅成热液成因提供了有力证据。

Furthermore, the nucleate flow boiling heat transfer coefficient formula was put forward according to the conclusions of heat soliton.

根据微槽中反应汽泡热通量的热孤子表达式,从理论上获得了以核态沸腾为主的微槽相变传热计算公式。

The study of the geological characteristics, ore-forming condition and genetic type from the Pingdingshan gold deposit, shows that the cryptomerous diorite and dioritic porphyrite in different stages formed a vein rock zone with gold containing ore bodies in the area, and five vein ore bodies were blocked out by spreading out with the NNE direction in the field.

黑龙江嘉荫平顶山岩金矿床的地质特征、形成条件和成因类型的研究表明:矿区内不同阶段的细晶闪长岩、闪长玢岩形成一个含金矿体的脉岩带;矿床范围内圈定5条呈脉状沿北北东向展布的矿体;矿石类型为石英脉型和蚀变岩型;金以裂隙金、晶隙金和明金为主,以银金矿的形式存在,且主要与石英、黄铁矿、毒砂和水云母共生;成矿作用分为热液期及表生期,其中热液期又分为4个成矿阶段,即纯石英阶段,黄铁矿毒砂石英阶段,黄铁矿毒砂水云母石英阶段和石英碳酸盐阶段。

In addition nC〓, nC〓, two isomers of C〓 sterene and three isomers of C〓 isoprenoid hydrocarbons were also identified from aliphatic fraction of pyrolyzed product at 200℃. After pyrolyzed at 300℃, the main aliphatic hydrocarbons were normal alkanes ranged from C〓 to C〓, with C〓 as the main peak and C〓 as the second main peak. Meanwhile, pristane, phytane and C〓 sterane were also detected. In the pyrolysates at 400℃ and 500℃, the content of saturated hydrocarbons decreased, the range of normal alkanes distribution became narrow and the main peak was nC〓. Low concentration of C〓-C〓 steranes was detected and the content of C〓-C〓 increased more.

在200℃热模拟产物饱和烃馏分中除检测出两种长链烯烃外,还检测到正十九碳单烯烃、正三十五碳双烯烃、两个碳二十八甾烯的同分异构体和三个C〓类异戊二烯烷烃化合物同分异构体。300℃模拟产物饱和烃主要为正烷烃,正烷烃的碳数分布范围为C〓-C〓,以C〓为主峰、C〓为次主峰;另外,样品中还检出姥鲛烷、植烷和C〓甾烷等化合物。400和500℃热模拟产物中的饱和烃含量下降,正烷烃系列碳数分布范围变窄,主峰碳后移至C〓,检测到低浓度的C〓-C〓甾烷系列化合物,另外,C〓-C〓藿烷系列化合物含量进一步增加。

The effects of variable properties of real gas and material, characteristic of valve, coupled heat transfer of regenerator, mutual influence of first and second stage, and so on, were considered in the model.

模型中考虑了实际气体性质,磁性填料的变物性,阀门的配气特性,回热器的空容积及气体和填料的耦合换热,一、二级的相互影响等因素,综合模拟了双级G-M制冷机的工作过程。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。