查询词典 expressions

Instantaneous motions of the end effector of the typical industrial serial 6-DOF and 5DOF robots are also studied using reciprocal screw theory, The constrained and permitted motions at special configurations are given. Furthermore, the satisfied conditions for the special configurations are discussed, and in the reference coordinate system general expressions of the reciprocal screw and existed motion screw and the subspaces of the permitted rotational axes are obtained under all circumstances at special configurations.

本文中还用反螺旋理论研究了六自由度和五自由度工业机器人的瞬时运动，给出了它们在正常位形和特殊位形下的受约束的运动和存在的运动，以及它们在所有运动参数的不同组合下的反螺旋及存在运动螺旋系的一般表达式和转动轴线存在的子空间。

Thirdly, according to the equivalent circuit of the dc motor, the dynamical model is set up. Then, the dynamical model for the hybrid-driven press is developed using Lagrange's formulation. The system's equation is derived using expressions for the system energy function, its partial and time derivatives with respect to the defined generalized coordinates.

其次，根据直流电动机的等效电路模型，建立了直流电动机的动力学模型和位置负反馈控制模型；应用拉格朗日方程建立了混合驱动压力机机电系统的动力学模型。

Firstly, a generalized spectral dyadic Green's function formulation of multidielectric-layer structures is derived with three dimension sources, which is a set of closed form formulas, and is different from available iterative expressions for two dimension source.

论文从理论和实验上系统地研究了多介质层单频和双频微带天线，推导出新的理论计算公式，提出有效的数值计算方法，研制出新型式的双频微带天线，得。。。

And with these results, I delve further into the theoretical issues of MSP and the concentration is on a special class of MSP-Doob skeleton processes. Generalized limit distribution, limit distribution of these processes and conditions and the expressions for the existence of invariable measure of such processes are provided. Finally, these new results are then applied to queueing theory, reliability theory and inventory theory. A detailed study of GI/G/1 queuing model, parallel connection system model, water reservoir model and perishable inventory model is discussed. These models have already been investigated to some degree. In particular, as mentioned above, some scholars have already successfully applied the transient behavior theory of MSP to these models and transient distributions of main variables in such models have been obtained. However, the limit behavior has not been addressed. In this thesis, limit behavior of main variables in the above-mentioned models is established.

在这个基础上，对马尔可夫骨架过程的理论进一步进行了探讨，将注意力集中于一类特殊的马尔可夫骨架过程Doob骨架过程，给出了这类过程的广义极限分布、极限分布以及不变测度存在性条件和表达式，并应用这些结论于排队论、可靠性理论和存储论等领域-具体分析了GI/G/1排队论系统模型、并联系统模型、水库储水模型、易腐烂物品库存模型——这些模型都不同程度地被许多学者研究过，特别，如前面提及，已有人成功地应用马尔可夫骨架过程的瞬时性态理论，获得了上述各模型中的主要参量过程的瞬时分布，但是，却并没有探讨它们的极限性态——建立了若干关于上述各模犁的主要参量过程的极限性态的结果。

In this study, the expressions of HIF-1α and VEGF in pancreastic cancer were evaluated, and may be promote the therapeutic genic targets of pancreatic cancer.

本研究通过分析胰腺癌组织中的HIF-1α、VEGF相关表达变化，结合临床资料，旨在探讨HIF-1α、VEGF在胰腺癌发生、发展中的作用及意义。

We might find others are lacking in sincerity or genuineness in their expressions of social niceties.

我们可能发现别人的表述方式不够真挚和真实。

The definition, operation, properties, geometric meaning of quaternion and its three expressions are discussed. It is also demonstrated how to use quaternion to transform points.

本文详细叙述了四元数的这一功能，讨论了四元数的定义、运算、性质、几何意义和它的3种表达形式，给出了使用四元数处理点的各种几何变换的一般结论。

Some of your expressions, I must tell you, have a very Germanic ring.

我必须告诉您，您的某些措词很有德国味道。

Leonardo's depiction of Christ as the focal point in perspective and in the form of a triangle, symbolic of the Trinity, provides for calmness and stability, whereas the gesticulation and facial expressions of the Apostles conveys their sense of astonishment.

达文西将耶稣作为透视法中的焦点，并用三角构图法提供了画面稳定性，也象徵三位一体。而门徒们的手势及脸部表情正透露出他们的惊愕之情。

It has also been shown that the expressions of TGF-β1 were elevated in human gingiva under CsA applications.

研究结果亦指出在服用环孢灵的人类牙龈中其转型生长因子(TGF-β1)的表现量有增多的情形。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。