目的探讨宁夏蚊类分布及区系结构。
Objective To study the species and fauna of mosquito in Ningxia Autonomous Region.
这些特征决定了音系结构是非线性的。
All these features determine the nonlinearity of phonological structure.
平面桁架是一种自然离散化的杆系结构。
英语音系结构是一个重音观照下的动态系统。
The phonological structure of English is a dynamic system in the light of stress.
承载齿轮的平行啮合使行星轮系结构较紧凑。
The parallel meshing of several gears under load permits a compact construction.
介绍了一种平面杆系结构自由振动的解析解法。
The analytic method for the free vibration of plane frame structure is presented.
本文针对复杂杆系结构提出一种超级有限条的分析方法。
A super finite strip method for complex rod-systems has doveloped in this paper.
提出移动荷载作用下杆系结构内力包络图的精确计算方法。
An exact method for computation of envelopes of various internal forces of skeletal structures under moving loads is developed.
研究了随机杆系结构在随机荷载作用下的随机优化设计问题。
The stochastic optimization method for skeletal structures with random parameters under random loads action is studied.
在杆系结构可靠性分析中，求取临界失效模式是一个主要课题。
In the structural reliability analysis of frames, it is a primary subject to identify the critical failure modes.
TPM手控器属于杆系结构，设计原则为重量轻、强度精度高。
The TPM is truss system structure, the design principle is light weight and high dynamic accuracy.
该方案包括整体优化策略和空间杆系结构优化设计等两个方面。
The scheme includes the two aspects: the study on the whole optimization and the space trusses optimization.
以柔度法原理为基础对一空间杆系结构的损伤识别作了详细分析。
By the principles of compliance method, there are detailed analysis of the damage identification of a Structure in space.
本文引入了杆系结构的回弹反耦联系统和回弹反耦联方程的概念。
The conceptions of springback anti-coupled systems and equations of the structures of bar systems are introduced in this paper.
该方法能直接应用到大型复杂杆系结构的几何非线性问题的求解中。
This method can be applied to the solution of geometrically nonlinear problems for complicated structures.
计算了平面串并联多质点系结构在竖向地震作用下的竖向刚度矩阵。
This article calculated the vertical stiffness matrix of plane frame structures subjected to vertical earthquake action.
用该算法求解杆系结构可不必确定基本结构，且能获得稳定的数值解。
It is possible in this new algorithm to deal with space frames without firstly delineating the basic determinate structure and the ensuing numerical computation is rather stable.
本文进一步对铰接杆系结构撤除杆件后的几何稳定性问题进行了讨论。
Furthermore, this thesis carries out some discussions about the geometrical stability of the pin-bar assemblies after removing some bars.
根据射流动力学理论，分析了产生这种波系结构和流场压力变化的原因。
The reasons of forming a shock-cell structure and changing the flow field pressure were analyzed with jet dynamics.
根据调查结果，对区系结构进行分析，表明该区以东洋种和广适种为主。
The result showed that the main elements of this fauna were Oriental and Eurytherm.
对压力波制冷机内非定常流动过程、波系结构、激波形成机理等进行了探讨。
The unsteady flow, structure of waves and mechanism of the forming of shock wave in pressure wave refrigerator are investigated in the present paper.
为精确分析滑动索系结构的内力和变形，创建了一种考虑摩擦力影响的新单元。
To analysis the internal forces and deformations of gliding cable structures, one element taking friction into consideration was developed.
拱系结构的稳定性分析用单拱或少量单元的拱系子结构代替并不一定偏于安全。
It is not safe to justify the stability of whole arch-structure by means of the stability of the single arch or the sub-arch-structure.
推导了铰接杆系结构切线刚度矩阵较为简便的计算生成过程，便于在编程中实现。
Numerical calculation process to obtain the tangent stiffness matrix of structure is deduced and geometric stability of different types of structures are analyzed.
介绍了17辊式矫直机的工作原理，辊系结构，矫直机的调试步骤及其维修保养。
The principle of17rolls leveler, the structure of the roll stand, the adjustment steps of the lever and some suggestions on maintence are introduced.
利用自应力矩阵的特性，提出并证明了一种快速识别杆系结构中“必需杆”的方法。
By utilizing the properties of self-stress matrix, a technique for quickly distinguishing "necessary bars" is proposed.
这一画廊可视作是一次太空虚拟之旅，在这里，你能看到其他星球与太阳系结构的图像。
This gallery can be treated as the virtual tour to the space, where you can see the images of other planets and formations of the Solar System.
相对带宽是红外中带滤光片重要的指标，主要取决于光学薄膜的膜系结构和具体设计。
Relative bandwidth is a key specification for the medium bandpass infrared filter, which depends on the film structure and its design.
新单元可直接用于常规的有限元分析中，研究处于工作状态或施工中的滑动索系结构。
This new element can be incorporated into conventional finite element analysis schemes, to analyze the gliding cable structures in service or under construction.
特别对于较复杂的杆系结构的稳定性问题效果尤其明显，丰富了压杆稳定性研究的内容。
This method was particularly obvious for more complex structures, it also could abundant the studying content of member in compression stability.
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