双特征的

The basic feature of aleatory contract is the bilateral obligation, uncertainty in performing and the unequal mathematic value of money and obligations of each party.

射幸合同的基本特征双务性，履行的不确定性以及金钱或者当事人互相履行的数学价值外观上的不平等性。

Based on modeling test in water tank, this paper employed three different iron blocks to model water-bearing bodies and enclosed plastic pipes or rounded wood strips to model roadways. It gave physical modeling of water-bearing bodies in the working face floor with parallel Bipole-Dipole method, made analysis on the character of electrical field and the law of apparent resistivity changing when the low resistivity abnormity bodies were placed flatly close to water level under semi-space condition and were placed flatly, vertically or aslope to the water level under whole-space condition.

本文以三种不同规格的铁块模拟含水体，以密闭的塑料管或木块条模拟巷道，通过水槽模拟实验，采用平行双极—偶极法进行了对工作面底板含水体的物理模拟，分析了低阻异常体铁块在半空间条件下近水面水平放置以及全空间条件下水平、垂直和倾斜放置时的电场特征和视电阻率变化规律。

First, basing on point halving, this thesis proposed a new efficient algorithm of computing kP lQ on an elliptic curve over the finite field with characteristic 2 and analyzed the computational efficiency. When the ratio I/M of inversion to multiplication cost is small, this new algorithm is about 5%～30% faster than the traditional algorithms.

首先，基于半点运算给出一种计算特征为2的有限域上椭圆曲线双标量乘法kP lQ的新算法并分析了效率，当基域上求乘法与求逆的运算时间的比值比较小时，新算法的效率比已有算法提高5％～30％。

We describe the algebraic characteristic of the public-key cryptosystems based on algebraic structures such as elliptic curves,bilinear pairings,as well as braid group s,with the emphasis on the difficulties of constructing public-key cryptosystems based on non-commutative algebraic structures.

通过分析基于椭圆曲线、双线性对以及基于辫子群的公钥密码体制的代数学特征，着重讨论了构建基于非交换代数的公钥密码体制所面临的困难。

The model of adiabatic spherical to columnar hydrogen bubble growth in large leak sodium water reaction as well as the model of secondary loop pressure propagation with the one dimensional characteristic method are established under one double ended guillotine tube break in the steam generator of liquid metal cooled fast breeder reactor.

研究建立了钠冷快堆蒸汽发生器在单管束发生双端断裂情况下钠水反应中气泡从球形到柱状的变温绝热生长模型，及采用一维特征线方法建立的压力波在快堆二回路中的传播模型。模型中考虑了爆破膜、管壁弹性变形和气蚀的影响。

Keep your guard up as early as September 13, when Uranus in Pisces will oppose the Sun in Virgo. That will be your first indication that a partner, competitor, or detractor is about to act up in a very erratic, unpredictable way.

请从9月13日起开始警惕，因为那天天王星在双鱼对冲处于处女座的太阳，你可以将以下特征作为这段倒霉时期到来的第一个暗示：你可能会发现你的伴侣，竞争者或者对你恶意批评的人的行为开始变得飘忽不定，古怪难测。

The calculated results show that the total differential cross section is the general rule and characteristics of collision between an atom and a diatomic molecule, the phenomenon of the scattering oscillation at large angles is more evident along with increase of the incident energy for low-lying rotational excitation state-to-state differential cross sections in He-BH collision system.

计算结果表明：He-BH碰撞体系的总微分截面具有原子与双原子分子散射的一般规律和特征；随着入射能量的增加，低转动激发态-态微分截面在大角区的散射振荡现象会更加明显。

The polymer carriers,the immobilization of rare earth compounds,the properties of polymer-supported rare earth metal complex es and their catalytic characteristics in the polymerization of diene was reviewed with 25 references.

对聚合物载体的合成、稀土金属化合物的固定和聚合物载体－稀土金属络合物的性质及其催化双烯烃聚合的特征进行了论述。

The lexicalization of phrases is an important source of dissyllabic words in the Chinese language. Through a quantitative analysis of 93 cases this paper discusses some characteristics of lexicalization of phrases as shown through the study of structural patterns, semantic limitations, and changes in grammatical attributes and phonology after lexicalization.

本文采用定量统计的方法，对现代汉语中93个发生词汇化的词组进行了考察，在对其结构方式、语义发展条件及词汇化后语法属性和语音变化情况分析的基础上，初步探讨了现代汉语双音节词组词汇化的基本特征。

Firstly,an image was segmented respectively by the two-peaked histogram method,the Otsu method and the consistency criteria method. Then a criterion to value the image quality based on information entropy was made by rules,which was related to the image sizes of objects. The appropriate threshold value,by which image segmentation was implemented to judge the burden temperature distribution most efficiently,was obtained.

该方法首先利用双峰法、最大方差法和一致性准则法分别对图像进行区域分割，再根据图像目标大小，运用知识规则制定判断图像质量的信息熵评价准则，选择合适的分割阈值，获得对判断料面温度分布最有利的图像区域特征。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷