力学的

This paper analyzed and summed up the flexible seal structure, seal working mechanism and application field, analyzed the key part with finite element analysis in snubbing service , as follows:Introduced on the composition and working principle of the on-off flexible seal system in snubbing service.

本文主要对井口防喷密封装置的柔性密封结构、密封工作机理及其控制方法进行分析和研究，对带压作业防喷装置重要零部件进行了静力学有限元分析，主要包括以下几个方面：阐述带压作业系统组成与工作原理。

Objective To study the biomechanical reasons of internal fixation failure.

目的 探讨内固定失败的生物力学原因。

The application of H∞ control theory to flight dynamics problems is studied.

对H∞控制理论在飞行力学中的应用进行了研究。

And there is still a short discussion over the chemical fluid dynamics.

在这一部分中，还列入了化学理性力学分析的基本内容。

For the force-feed lubrication drawing process,the effects of the reduction and drawing speed on the property and microstructure have been discussed

对强制润滑拉拔工艺，试验研究了变形程度和拉拔速度等参数对线材力学性能的影响。

The principle of arch effect formation has been analyzed, and the formation condition and improving rule of arch effect has been set forth, combined with the mechanical theory of arch structure.

在此基础上结合拱力学原理，分析了气冲拱效应形成原理并提出了拱效应的形成条件和改进原则。

It is a new type of excellent automobile friction brake material as a replacement of asbestos friction materials

研究表明：此摩擦材料力学性能高，摩擦性能稳定，特别是高温磨损小，噪声低，是一种取代石棉摩擦材料的新型制动材料。

Patients indicated on the symptom report card and six-point functional scale the maximum level of vertigo, activity and stress.

运用症状卡和6点功能评分进行眩晕发作和活动状况的主观评分；采用纯音测听、耳蜗电图和双温试验进行听力学和前庭功能评价。

A new mechanistic-empirical based on FWD procedure is developed in this paper according to the information from the other country and our own.

参照国内外有关资料，建立了以FWD弯沉为基础的力学经验罩面设计方法。

Tensile tests were carried out to determine tensile mechanical characteristics of four materials: 2.2 and 2.7 mm double twisted hexagonal wire gabion meshes, 70RE geogrid and 80RE geogrid.

通过拉伸试验，研究网格直径分别为2.2和2.7mm的双绞合六边形金属格宾网、70RE和80RE土工格栅4种筋材拉伸力学性能。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。