三

By the definition of Darboux type vector and rectifying Darboux type vector ,we constructed the rectifying type developable surfaces and Darboux type developable surfaces and tangential Darboux type developable surfaces ,and study these three developable surfaces relationship with Minkowski slant helices and Minkowski conical geodesic curves. Bying applying the singularity theoerical knowledge, We give a classification of special developable surfaces under the condition of the existence of such a special curve as geodesic.

通过定义三维Minkowski空间中的达布型向量以及修正达布型向量，构造出三维Minkowski空间中的三类可展曲面，即修正型可展曲面、达布型可展曲面和切达布型可展曲面，研究Minkowski斜螺线和Minkowski锥面测地线这两种特殊曲线和这些曲面的关系，并研究Minkowski斜螺线和Minkowski锥面测地线作为这些曲面的测地线的条件下，运用奇点理论的知识，对这三种可展曲面进行奇点分类。

After the death of their parents, three brothers wanted to break up the family and live apart. In the very act of being sawn into three segments, the redbud tree withered all of a sudden. On seeing this, three brothers woke up to their error and decided not to break up the family again, which made the redbud tree came to life again like a miracle.

传说，古代有一田性人家，父母双亡后兄弟三人闹分家，钱财、房屋分光只剩下一颗紫荆权，正欲将树砍下锯为三段，树突然枯死，兄弟三人幡然醒悟，决定不再分家，紫荆树又奇迹般复活。

Another display shows the 1914 Yuan Shih Kai Dollar (Y329 type) with three different edges – with ordinary reeding, with a "Greek border" or alternating "T" design on the edge, and with a sort of "herring bone" design edge, in which curved, raised bars alternate with raised boxes.

另一个被展出来民国三年袁世凯头像壹圆（Y329 type，不知是啥，可能是PCGS的标识吧）也有三种不同的齿边，一种也是普通的刻槽直齿边，一种呢，是被称作"希腊边"的样式，也就是字母"T"上下交叉排列设计的的一种齿边样式②，第三种齿边样式有点类似於鲱鱼的骨头，末端呈弯曲的样子，凸起阴刻的线条连接著这些凸起末端弯曲的像隔栅线③。

The equations of two classes of 3D polynomial maps that are equivariant with respect to the rotational symmetries of either a regular tetrahedron group or a regular octahedron group are strictly given, on the basis of which the properties of the general Julia sets created by these 3D polynomial maps are discussed and proved.

从理论上分析并证明了三维多项式映射满足等变的条件，精确地给出了关于正四面体群和正八面体群具有旋转不变对称性的两类三维等变映射的具体公式，在此基础上讨论并证明了三维多项式映射的广义Julia集所具有的性质。

Intimate mode is adopted for the integration of three-dimensional geosciences model and two-dimensional, three-dimensional stability calculation program, while loose mode, completed by data transformation from three-dimensional regular grid to elements acceptable in FLAC 3D, is adopted for underground project.

采用紧密模式，进行了三维地质模型与斜坡稳定性二维极限平衡计算方法和三维最小势能计算方法的集成研究；采用松散模式，进行了地下工程三维规则格网模型与FLAC 3D计算模型之间的集成研究。

The Fort cylindrical diameter and nearly 30 meters, 0.8 meters thick top castle, castle wall thickness of 0.6 meters, Baonei clear height over the past three meters, there are nine square pillars, surrounded by 32 bullet hole could be stationed in a company forces, and has a reserve capacity of a week of food and drinking water.

该堡圆柱形，直径近三十米，堡顶厚零点八米，堡壁厚零点六米，堡内净高近三米，有九根方形支柱，四周有三十二个枪眼，可驻扎一个连兵力，并有储备一周粮食和饮用水的能力。

The total synthese three natural compounds to explore enantioselective synthesis of flavanol: We use phloroglucin and 2, 4, 6-trihydroxyacetophone as starting materials to synthesis distenin in two ways; Resorcin was used to synthsis 2, 5-dimethoxymethoxyacetophone though 3 steps.

对黄烷醇化合物的立体选择性全合成进行了探索：以间苯三酚和2，4，6-三羟基苯乙酮为原料，尝试用两条路线对Distenin化合物进行了全合成研究；以对苯二酚为原料，经三步制得2，5-二甲氧甲氧基苯乙酮，与2，4，6-三甲氧甲氧基苯甲醛反应，经四步反应得到天然产物3，5，7，2′，5′-二五羟基黄烷关键中间体1-（2′，6′-二甲氧甲氧基苯）-3-（2"，4"，6-三甲氧甲氧基苯）丙烷-1R，2R-二醇83及其对映体84；简要介绍了EGCg类化合物的生物活性和研究概况。

It can measure peak particle, peak displacement, peak particle acceleration, frequency at the peak velocity and the resultant peak partide velocity, peak sound , and frequency at the peak sound in three dimensions.

NCSC 5300是便携式固化计算机控制的测震仪，可以调出测点的三维振动速度、振动加速度、质点振动位移、振动频率和噪声强度、噪声频率，打印出测试结果及振动频率与三维振动速度的关系图、三维振动波形图，是理想的爆破测震仪器

In conclusion, from the perspective of institutional coordination, I rearrange the system of revocatory right as follows: When the trustee, in breach of trust, disposes of the trust property, the beneficiary is entitled to apply to the court for revoking his disposition; but when the trustee disposes of the trust property to a third party, it is only limited to that the third party either acquires the trust property gratuitously, or purchases it for value, but he knows of the breach of trust or does not know of its existence due to his gross negligence.

结论部分，本文从制度协调的视角对《中华人民共和国信托法》上的信托受益人撤销权制度进行了重新设计：受托人违反信托目的处分信托财产时，受益人可以申请法院撤销其处分；但受托人将信托财产处分给第三人的，仅限于该第三人为无偿受让或者虽非无偿受让，但第三人明知或者因重大过失不知受托人违反信托目的处分信托财产时适用之。

All these results indicate that group1, 2, 3 are three new DNA relatedness groups different from known rhizobium species.

与各已知种的DNA同源性分别为0-41.7％、0-39.3％、4.0-44.7％，均低于70％；确证这三个新群为三个不同于已知种的、独立的DNA同源群；第1、2、3三群的G+Cmol％分别为60.3-62.9％，59.7-62.4％，60.2-62.6％。

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。