查询词典 mechanics

To the question of fatigue invalidating of strain gages in dynamic test(normally the zero drift value being bigger than the permissible value),the equations for calculating the fatigue life of the strain gages are derived on the basis of the fracture mechanics theory.

针对应变片在长时间的动态测试中疲劳失效(一般是测量误差超过允许值)问题，本文从疲劳断裂力学的基本理论出发，导出了应变片疲劳寿命的计算公式；实验表明，实验曲线与理论曲线吻合，这证明我们推导的公式的正确性，为应变片的疲劳寿命的预测、许可载荷的确定、失效判据的确立提供了理论基础。

Objective To study the effects of permissive hypercapnia on pulmonary mechanics and hemodynamics in sheep with acute lung injury.

目的 探讨允许性高碳酸血症对急性肺损伤绵羊肺力学及血流动力学的影响。

In the end, in the virtue of the theory"encoding and decoding", the meaning transmitting mechanics of personae figures is further studied.

最后，根据编码和解码理论，进一步研究了广告中人物符号的意义传播机制。

The application of rupture mechanics and remanufacturing technology is very important not only to petrochemistry industry but also to the life-prolong of equipment.

石油化工行业对于断裂力学和再制造技术的应用极为重要，对设备延寿有重要意义。

Beijing Petty Officer School of Mechanics, Beijing 102249, China

中国人民解放军北京机械士官学校，北京 102249

The paper presents a method of experimental mechanics which is combined traditional electronic measurement with photoelasticity using in online analysis of strength.

本文将电测方法与光弹性方法结合在一起，导出了应用读数应变εd就可以获取准静态情况下结构的载荷P、危险截面位置和最大应力峰值σ_(X_0Y_0Z_0)的理论计算方法，从而为结构的在线强度评价提供一种实验分析方法。

This paper solves the stress intensity factors K_1 in fracture mechanics with the techniques of photoelasticity and dislocation.

用光弹性法和位错法两种方法求解工程断裂力学中的应力强度因子K1，通过实验法和数值解法所得结果相比较，可得其解值与实际均基本吻合，满足工程实际要求。

The thesis starts with literature survey, analyzes the requirement put forward in special dynamic condition, demonstrates research advancement in modern flash ranging mechanics, selects digital speckle correlation measurement, which has low requirement for measuring condition and object's surface photology condition, with fine resolution power, has prospect of non-contact measurement, develops the ZM-DF-1 dynamic displacement and frequency measurement system.

较充分地论证了现代光测力学领域中主要方向的研究进展，选择对测量环境和对象表面光学条件要求不高，分辨力强、有实现非接触测量前景的数字散斑相关测量方法，开发ZM-DF-1型动态位移与频率测量系统。

Through integration of techniques including root phototonus, optics imaging and electric-mechanics, an experimental system for plant root image fast acquisition and procession was developed.

在图象边缘检测方面，提出了基于子波变换的边缘检测新算法，该方法具有较强的抗噪声性能。

To understand flowmetering, it might be useful to delve into some basic theory on fluid mechanics, the characteristics of the fluid to be metered, and the way in which it tr**els through pipework systems.

为了了解流量计，它可能是有益的深入探讨一些基本的理论，流体力学的特点是流体计量，并在它穿越管道系统。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。