二金属的

However, deoxygenation induced further reduction of these metal ions at high temperatures.

过渡金属在二氧化锆基质中的氧化还原特性与其d轨域之电子组态有关，过渡金属具有d5或d10电子组态者(如Mn2+， Fe3+， Cu+，及Zn2+)具有高稳定性能阻绝低温锻烧(~550 °C)时去氢氧化所引发的还原反应，然而高温引发的去氧化可提供更高的还原力，因此这类过渡金属在高温锻烧后(~950°C)将继续还原成低价的物种。

To solve the problems of the limescale ,the oxidation which are produced by the direct contact between a metallic conductor and water, the detectingreliability and the service life, the utility model adopts the technical proposal as below: the proposal comprises a monostable controllable trigger, a second low-pass filter, a voltage follower and a display circuit, the power circuit links with the monostable controllable trigger, the second low-passfilter, the display circuit and a timebse pulse circuit separately, the utility model is characterized in that the monostable controllable trigger, the second low-pass filter and the display circuit sequentially links, the monstable controllable trigger separately links with a water lever sensor and thetimebase pulse circuit.

为了解决金属导体与水直接接触会产生水垢和氧化、影响检测可靠性和使用寿命的问题，本实用新型采用了以下技术解决方案：它包括单稳可控触发器、二阶低通滤波器、电压跟随器和显示电路，电源电路分别与单稳触发器、二阶低通滤波器、显示电路和时基脉冲电路相接，其特征在于单稳可控触发器、二阶低通滤波器、电压跟随器和显示电路依次相接，单稳可控触发器分别与水位传感器和时基脉冲电路相接。

GC/MS analysis showed that the poly (1,1'-bisnaphthol carbonate), 2-ethylhexyl acetate, heptanone,octene and acetic acid were formed during the ester interchange.

本文用金属化合物作催化剂进行1，1′-联二萘酚-4，4′-二乙酸酯和二(2-乙基己醇)碳酸酯的酯交换反应，评价了不同金

In complex 1,Cucan be described as a four-coordinated square planar geometry.Compound 8 is the sodium salt of plumbagin and exists as ionic compound.Compounds 9-16 are the rare earth complexes of plumbagin with La,Y,Dy,Sm,Gd,Nd,Erand Eu.Compound 17 is binuclear Y complex.18 is mononuclear Ycomplex with plumbagin and another ligand from Plumbago Zeylanica.Compounds 19-21 are the ternary complexes with plumbagin and 2,2\'-bpy and phen as assistant ligand.In 19, the geometry of Cucan be described as five-coordinated distorted square pyramid that exists in a dimer through the weak bonding,and 1-D chain structure is formed by intermolecular hydrogen bonds.

化合物1的单晶结构分析表明1具有四配位平面四边形结构，化合物8是白花丹素的Na盐，以离子化合物形式存在；化合物9～16为白花丹素的La，Y，Dy，Sm，Gd，Nd，Er，Eu的稀土金属配合物；化合物17是白花丹素的双核钇结构；化合物18为白花丹素的单核钇结构，该配合物除了含白花丹素外，还有来自白花丹植物中的另一个单体化合物也参与配位；化合物19～21是以2，2\'-联吡啶和邻菲咯啉等含N配体为辅助配体，具有白花丹素—含N配体—金属离子的三元配合物，化合物19是白花丹素和2，2\'-联吡啶与Cu的配合物，具有五配位的四方锥构型，通过Cu…O弱的成键作用形成二聚体，再通过分子间的氢键作用进一步形成一维链状结构，化合物20和化合物21是白花丹素分别与2，2\'-联吡啶和邻菲咯啉的Zn配合物，都具有六配位八面体构型的双核锌配合物，呈一维链状结构，化合物20中链与链之间的大量氢键将一维链扩展成二维层，分子间的π-π堆积作用进一步形成三维结构。

In the present work, the compensation mechanism for secondary electron emission has been investigated for the accurate measurements of high-energy proton beam.

根据高能带电粒子在金属表面诱发二次电子发射理论，对高能质子束流强度测量的二次电子补偿原理进行了研究，设计了二次电子补偿结构。

Three dimension metal plastic deformation of special shaped products was transformed into two dimension axis symmetry problem, analysis model of the continuous stream and strain rate fields were sough.

将三维金属异型材挤压塑性成形问题转化为二维轴对称成形问题，求解椭圆异型挤压金属塑性成形连续流动场和应变速度场的数学解析模型，并应用金属塑性成形理论，建立了精密挤压异型材优化模腔的数学模型，同时为精密快速地实现挤压模腔的CAD/CAM一体化目标提供了技术支持。

In order to achieve the low temperature process, we used metal-induced lateral crystallization to fabricate it . Ni can lower the temperature of process and annealing time because the reaction between Ni and Si of forming Nickel Disilicide(NiSi2) which lowers the annealing time in further process.

在低温制程上采用的是金属侧向诱发结晶(Metal-induced Lateral Crystallization)方式，此方式是使用镍降低制程的温度以及生长时间，原理主要是藉由镍与矽之间的反应产生二矽化镍(NiSi2)，进行退火后可产生金属诱发结晶与金属侧向诱发结晶两种结构，再进行其微结构观察。

Long-chain branched polyethylene was obtained using a homogeneous bianary catalyst system composed of late and early transition metal complexes,namely a mixture of bis(α-naphthalidine)-2,3-butanediimine NiBr2 and Cp* TiCl3,as catalyst precursors in the presence of MAO.

合成了一种后过渡金属镍化合物 [二- N ，N′--2 ，3-丁二亚胺镍二溴化物 ][C10H7—NC(CH3)C(CH3)N—C10H7]NiBr2，此化合物在MAO活化下催化乙烯聚合能得到含有末端双键的低分子量聚乙烯，即长链α-烯烃。

In the third chapter, the synthesis of5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde oxime(2) from5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde(1) and phenyl-hydrazine were introduced firstly. The synthesis of nine dioxapyrrolino[3,4-c]pyrazoles containing chiral pyrazolyl moiety(6a-i) from 2 with N-substituted-phenylmaleimide by nonmetal oxidant IBD-initiated intermolecular 1,3-dipolarcycloaddition was described in detail.

第三章首先以5-[(1′S)-1′，2′-二乙酰氧基乙基]-1-苯基吡唑-3-醛(1)和苯肼为原料，合成了化合物5-(1′S)-1′，2′-二乙酰氧基乙基1-1-苯基吡唑-3-醛-苯腙(2)；再用化合物(2)与N-取代苯基马来酰亚胺反应，利用无金属氧化剂—IBD引发1，3-偶极反应，发生分子间的环加成，合成了9种新型手性吡唑连二氧代吡咯啉并

The novel process of preparation of DNS by means of dioxygen liquid-phase oxidation of NTS with synthesized metal phthalocyanine complex catalyst in alkali solution under mild condition were systematically investigated for the first time.

首次以金属酞菁络合物为模拟酶催化剂，在碱性水溶液中，于温和条件下，研究了4-硝基甲苯-2-磺酸催化氧化制取4，4'-二硝基二苯乙烯-2，2'-二磺酸的方法和工艺。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。