查询词典 mechanical device

This thesis applies the methods of evaluation in the field of mechanical engineering and summarizes the procedure of performance evaluation for mechanical products. New evaluation approaches are proposed, which make the evaluation exacter and more dependable.

本文将评价决策基本原理和理论应用于机械产品性能评价，总结出一般机械产品性能评价的过程，提出了新的机械产品性能评价方法，使机械产品性能评价分析更准确可靠。

For those slurry pump with expeller seal combined with packing or packing seal, the shaft together with impeller should be able to be rotated along pump rotation direction by hand. Otherwise the impeller clearance should be adjusted (For those slurry pump with mechanical seal, adjust the impeller gap first, then mechanical seal).

对于填料加付叶轮组合式密封或填料密封式渣浆泵，用手按泵转动方向转动轴，轴应能带动叶轮转动，不应有摩擦，否则应调整叶轮间隙(对于机械密封式渣浆泵，应先调整叶轮间隙，再调整机械密封)。

For those slurry pump with expeller seal combined with packing or packing seal, the shaft together with impeller should be able to be rotated along pump rotation direction by hand. Otherwise the impeller clearance should be adjusted (For those slurry pump with mechanical seal, adjust the impellergap first, then mechanical seal).

对于填料加付叶轮组合式密封或填料密封式渣浆泵，用手按泵转动方向转动轴，轴应能带动叶轮转动，不应有摩擦，否则应调整叶轮间隙（对于机械密封式渣浆泵，应先调整叶轮间隙，再调整机械密封）。

Losses in copper and sulfur in residue resulting from mechanical entrainment are calculated using Nagamori′s physical suspension exponential equation, and the mechanical loss form of copper is analysed.

利用Nagamori的悬浮指数方程对渣中铜和硫的机械夹杂损失进行了计算，分析了铜机械损失的形态。

An alternative formulation of quantum mechanics is Feynman's path integral formulation, in which a quantum-mechanical amplitude is considered as a sum over histories between initial and final states; this is the quantum-mechanical counterpart of action principles in classical mechanics.

一个量子力学的代用公式是费曼路径积分公式，在其中量子力学振幅被认为是超过最初与最后态历史的总和；这就是在经典力学里量子力学作用原理的相似物。

The transverse elasto-plastic mechanical properties of fiber bundle reinforced composites were studied by using the micro-mechanical model and finite element method.

纤维束复合材料的主要力学特征就是纤维的接触效应。首先纤维互相接触而产生相互作用，这种相互作用对宏观性能有不同程度的影响。

The transverse elasto plastic mechanical properties of fiber bundle reinforced composites were studied by using the micro mechanical model and finite element method.

利用细观力学模型和有限元法研究纤维束复合材料的横向弹塑性力学性能。

At that time, England and America began to establish mechanical filature factories in Shanghai. Since the technology innovation of the west Industrial Revolution started with the textile industry, the production efficiency and quality of Chinese traditional hand reeling cannot match the mechanical filature at all.

当时，英美各国开始在上海开设机械缫丝厂，西方"工业革命"的技术创新就是从纺织业开始的，所以，中国传统手工缫丝的生产效率和质量根本无法与机械缫丝竞争。

Based on the improved first order second moment theory and aimed at the problems of mechanical reliability analysis and mechanical reliability design of single designing variable, this paper put forward a kind of explicit iteration algorithm for computing the structural reliability and determining the designing parameters of structural reliability.

引言改进的一次二阶矩理论是结构可靠性分析和设计的一种实用方法[1]，具有建立结构可靠性分析和设计计算模型简单等优点，在这种方法中，Hasofer和Lind推荐的可靠度指标是定量评估机械可靠性的一种基本参数。

In chapter 2, a finite element model for the composite sandwich plates is developed, based on the Zig-Zag deformation assumption and the first order shear deformation theory, and the finite element buckling analysis governing equations for the plates under mechanical, thermal and/or thermal-mechanical mixed loads are deduced respectively. By Von-Karman nonlinear deformation relations and Total Lagrange formulation, an incremental governing equation for postbuckling analysis is established and a corresponding effective computational scheme is presented..

第二章首先建立了基于Zig-Zag截面变形假定和Mindlin一阶剪切理论的夹层板有限元分析模型，分别推导了夹层板机械力、热载和热—机械力耦合屈曲分析的有限元列式和相应的屈曲前以及屈曲临界状态的平衡方程，基于Von-Karman大挠度理论，采用增量形式的全局lagrangian法推导了复合材料夹层板增量形式的几何非线性有限元离散平衡方程，给出了一种有效的非线性平衡方程的迭代求解格式。

We are forbidden from giving money to these shoeless, skinny children, as this will perpetuate begging.

向光着脚，骨瘦如柴的孩子施舍是不可以的，因为要招来无休无止的乞讨。

It would be hard not to fall victim to some sharpeyed policeman.

要想不被某个目光锐利的警察抓到，谈何容易。