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The variable geometry truss mechanisms have been studied extensively and systematically by this project. The research plan has been completed all sidedly, and expected results have been obtained. Three new kinds of combination decahedrons and a new class of variable geometry truss mechanism, which is composed of an octahedron and three tetrahedrons connected in parallel form, are proposed. The position analyses for decahedrons, dodecahedrons, triple-octahedrons, combinations decahedron and a new type of structure of variable geometry truss mechanisms are presented by introducing additional extra linear displacement sensors and using resultant elimination and homotopy continuation algorithms. The method of kinematical analysis of variable geometry truss mechanisms is established.

课题组对变几何桁架机构进行了深入的研究，全面地完成了研究计划，取得了预期的成果；提出了三种新的十面体组合机构以及由一个八面体和三个四面体组成的新型变几何桁架机构的结构形式；应用结式消元、附加传感器和同伦方法等提出了十面体、十二面体、三重八面体、组合十面体和新型变几何桁架机构的位置分析方法；建立了变几何桁架机构运动分析的一般方法；建立了简洁的凯恩和拉格伦日动力学的模型；应用有限元和子结构方法，提出了变几何柞架机构弹性动力学模型，导出了逆动力学方程的显式形式；设计和研制了一台可折叠的八面体变几何杵架机构装置等。

801E50 .( Imp: Don't key in all the three numbers and convert to hexadecimal, this would give a different combination) The decimal part for a color varies from 0-255 and we can have different combinations by varying this RGB combination.

进出口：不要在所有关键的三个电话号码，并转换为十六进制，这将给不同的组合）的小数部分的颜色不同， 0-255 ，我们可以有不同的组合不同这三原色的组合。

By using the group-chain, the wavefunctions of the 4f〓 configuration for RE ions are also expressed as linear combinations of group-chain basis functions in Butler's irreducible representation notation. The matrix elements of the CF Hamiltonian then are calculated by means of the Wigner-Eckart theorem and factorization lemma of the jm factors. Before the CF level fitting, a point-charge calculation of the conventional CF parameters B〓 has been performed by means of the lattice-sum technique from the known crystal structure data. The corresponding parameters in the group-chain are calculated by the conversion relationship between two schemes that proved identical in essence, which are usually used as initial values in the fit to the experimental levels. The ratios of the same k-value CF parameters are suggested as the constraint conditions in the fit, in order to utilize fully the symmetry distortion degree of the studied system.

利用群链理论，属稀土离子4f〓组态的波函数表示为以不可约表示标记的群链基波函数的线性组合；借助Wigner-Eckart定理和2jm和3jm因子的分解定律计算了晶场哈密顿的矩阵元；根据点电荷模型和已知晶体结构数据，利用点阵求和技术计算得到传统晶场参数B〓初值，相应的非传统形式的群链参数初值则由两种方案下的转换关系求得；这些初值通常作为非线性拟合晶场能级计算的初值，系统的对称性畸变信息则反映在以同阶晶场参数的比值作为能级拟合的约束条件。

The constraint force/torque dexterousness is defined as the ratio of minimum singularity value to maximum one of the force/torque constraint matrix, by which the performance of the combinations of actuating inputs is evaluated.

将约束力/力矩矩阵的最小奇异值与最大奇异值之比定义为约束力/力矩各向同性度，并以此为指标对各驱动输入组合的优劣性进行评价。

Then according to the diagnosable rate of each genetic marker and their combinations, th...

本文提出了中国人群中选择遗传标记进行β地中海贫血产前诊断的最佳路线。

The diagnosable rate of the genetic markers and their combinations have been calculated according to the polymorphism distribution data of the seven genetic markers in Chinese population.

又据各遗传标记及其组合的可诊断率，我们可以对：(1)所作出产前诊断的可诊断率进行预先评价；(2)选择适合于中国人群β地中海贫血产前诊断的最佳策略。

Methods Two different models of hollow fiber dialyzer were used in vitro for nine countercurrent Qb and Qd combinations.

体外条件下，对两种透析器、9组不同透析液流量和血流量组合的尿素KoA进行了测定。

Studies showed that there were two typical combinations of the facies in the filling sedimentary sequence of the epicontinental basin, wherein one was the depositional diastem developed between the facies, which was a discontinuous combination of the depositional facies with continuous time sequence, namely the exposed sediments, the tidal flat swamp and the peat swamp, and the shallow marine sediments appeared from bottom to top; and the other was the continuous sequence with gradually evolved sedimentary environment, in which it was a continuous process that the tidal flat swamp turned gradually into the peat swamp.

研究表明：陆表海盆地充填沉积序列中有两种较为典型的相组合，一是相与相间发育沉积间断面，为不连续沉积相组合，但在时间序列上是连续的，即自下而上依次为暴露沉积、潮坪沼泽及泥炭沼泽、浅海沉积；第二种序列是连续相序，盆地的环境演化是渐变的，潮坪沼泽化逐渐泥炭沼泽化是一个连续过程。

In some embodiments compounds described by the formula CCl.sub.xH.sub.y comprise carbon tetrachloride, dichloromethane, or combinations thereof.

在某些实施方案中，由化学式CClxHy所表述的化合物包括四氯化碳、二氯甲烷或它们的组合。

The result showed that the variance of special combining ability was significantly better than that of the general combining ability in amount of cocoon crop and cocooning rate to newly hatched larvae, meaning that non-additive effect of these two characters was dominant in cross combinations, but additive effect of thousand-cocoon weight was dominant.

结果表明：除千粒茧质量外，产茧量和收蚁结茧率的特殊配合力方差显著地大于一般配合力方差，说明在杂交后代这2个性状的非加性效应占主导地位，而千粒茧质量则以加性效应为主。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。