受主

Secondly, the energy band structure of codoped-TiO2 shows that an acceptor level and a donor level present inside the band gap, and an electron on the donor level passivates a hole on the acceptor level, so the systems still keep semiconductor character and enhance the separation of electron-hole pairs excited by photo irradiation.

另外， V： N共掺杂TiO2的能带结构表明：导带底下方施主杂质能级上的一个电子刚好补偿价带顶上方受主杂质能级上的一个空穴，使掺杂后TiO2材料表现出半导体的显著特征，这有利于电子—空穴对的分离，提高量子产率。

These results suggest that EL2 centres are reduced and native acceptors are created in a surface region by annealing.

这些结果表明，热处理过程中样品表面层不仅发生了施主中心EL2的外扩散，而且有新的受主中心产生。

The antisite defects Ga and In as well as Zn acceptors were also observed in the irradiated sample.

此外，辐照在样品中还产生了反位缺陷Ga和In以及受主杂质Zn。

The time scale and velocity of energy transfer is estimated at 90 fs and 1670 m/s. Moreover, the transfer process requires the acceptors and donors vibrate with different assignments.

能量转移的时间尺度和转移速率分别约为90 fs和1670 m/s，能量转移发生在具有不同的振动方式的施主和受主之间。

Chapter Two illustrates the nature of the international guarantee.At first,the writer analyses the meaning of collateral nature and its theoretical basis.Thewriter points out that in order to reinforce the protection of the guarantor'sinterest,the guarantee is located as collateral guarantee in all countries'traditional legislation.In other words,the validity of the guarantee contract isdetermined by the underlying contract,i.e.if the underlying contract isestablished,the guarantee contract is established,too;if the underlying contract isvalid,and the guarantee contract is valid too.It is true,otherwise.But thedoctrine of autonomy of private law dominates the civil law and commercial lawin all the countries,so the parties are permitted to alter the collateral nature of theguarantee by an agreement under the related laws worldwide.so the collateralnature of the guarantee is not the compulsory nature of the law.This lays a solidfoundation for the emerging of the independent guarantee.The writer thenanalyses the meaning of independence and the cause of the booming of theindependent guarantee.In fact,the independent guarantee was originated fromthe change of the collateral nature by the parties contract.As a result,the validityof the contract of independent guarantee is not determined by the underlyingcontract as the collateral guarantee,But the validity of the independent guaranteecontract is independent from the underlying contract,the establishment and thevalidity of the contract of independent guarantee are not subjected to theunderlying contract.

第二章对国际信用担保的法律属性进行了论述，首先分析了从属性的含义及其理论基础，指出虽然各国传统立法为了加强对保证人利益的保护，都将信用担保定位于从属保证，即保证合同的效力取决于主合同的效力，主合同成立，保证合同也成立，主合同生效，保证合同也生效；主合同不成立，保证合同也不成立，主合同不生效，保证合同也不生效，但是由于私法自治的精神主导着各国的民商法领域，各国立法都允许当事人通过合同约定对信用担保的从属性进行改变，所以保证的从属性从来就不是信用担保制度的法律强制属性，这也为独立保证制度的出现奠定了制度前提；其次分析了独立性的含义以及独立保证兴起的原因，独立保证实际上就是当事人通过合同约定对保证从属性的改变，使独立保证合同的效力不再象从属保证合同的效力那样取决于主合同的效力，而是使独立保证合同的效力独立于主合同的效力，独立保证合同成立不因主合同的不成立而受影响，也不因主合同的无效而无效。

With low donor and acceptor density and anion adsorption on surface of passive film, effectively preventing the adsorption of Cl(superscript -) in passive film, the resistance to localize corrosion of passive film was greatly improved.

低的施主与受主浓度及钝化膜表面负电荷的增强，可有效排斥侵蚀性Cl在钝化膜表面的特性吸附，有利于提高不锈钢的耐局部腐蚀性能。

These results indicate that the difficulties in achieving high hole concentration of 1018 cm-3 appear to be related not only to hydrogen passivation,but also to self-compensation.

这些结果表明要实现空穴浓度达1018 cm-3，不仅要考虑H的钝化作用，还要考虑Mg受主的自补偿效应。

These results indicate that the difficulties in achieving high hole concentration of 1e18cm-3 appear to be related not only to hydrogen passivation,but also to self-compensation.

这些结果表明要实现空穴浓度达1e18cm-3，不仅要考虑H的钝化作用，还要考虑Mg受主的自补偿效应。

It can be easily doped high-quality n-type, but it is difficult to dope p-type. ZnO has largely failed to live up to its potential due to its "asymmetric doping" limitation, such as self-compensation, deep acceptor level, and low solubility of the acceptor dopants.

高质量的n型ZnO很容易实现，但是ZnO的p型掺杂由于其固有的极性却非常困难，这主要是因为ZnO中本征缺陷具有强烈的自补偿，受主元素在ZnO中多为深能级并且固溶度较低。

Results show that in hover the fuselage normal force and pitching moment are relatively high due to the influence of rotor/wing downwash; and in low speed forward flight, the downwash have strong interaction on the normal force and pitching moment of fuselage due to the big dimension horizontal tail; the effects of downwash on the fuselage rolling and yawing moments are little and the influence on fuselage side force is considerable.

结果表明，悬停时受主机翼高速旋转产生的下洗尾流影响，机身产生了较大的法向力和低头力矩；前飞时下洗尾流对机身的法向力和俯仰力矩有比较严重的干扰，对滚转力矩和偏航力矩干扰较小，对侧向力有一定影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐