查询词典 stress

For the general case of non-uniform in-situ stress resulting from geotectonic force, the stress condition of well bore rock fracture is analyzed with the rock strength taken into consideration.

本文从存在地质构造力而产生非均匀地应力场的一般情况出发，分析井壁岩石呈现破裂的应力条件，以及考虑岩层本身的强度性质提出了新的预测模式，并对模式中所包含的各项参数的确定方法进行了分析讨论。

Using four different Na_2CO_3 concentration as simulating alkaline stress,the relative alkali damage rate of rice germinative energy and germination rate at germination period,RADR of rice root length,seedling height and root number at early seedling stage were looked as evaluation indexes,so the alkaline stress concentration for evaluation of alkaline tolerance at germination period and early seedling stage in rice was studied.

通过采用4种不同浓度的Na2CO3模拟碱胁迫，以水稻发芽期发芽势和发芽率的相对碱害率以及幼苗前期的根数、根长和苗高的相对碱害率为鉴定评价指标，研究水稻发芽期和幼苗前期耐碱性鉴定的碱胁迫条件。

Lactide, glycolide or caprolactone, biodegradable polyester and diisocyanate as materials are first bulk melt polymerized to prepare the degradable polymer with thermal deformation transforming temperature of about 37 deg.c. The obtained material is processed at temperature over melting temperature so as to shape into spiral rack, applied with stress at temperature higher than Ttrans to form shape easily operational handling and frozen to eliminate stress into the product.

本发明以丙交酯、乙交酯或己内酯，生物可降解聚酯及二异氰酸酯为原料，通过本体熔融聚合制备得到热致形变温度转化点在37℃左右的可降解高分子材料，将得到的材料在熔融温度以上进行加工、赋形制作成用于不同管腔内的螺旋管状支架；在T＞T trans 条件下施加应力，加工为便于手术操作的形状；冷冻定型消除应力，即得产品。

The purpose of this article is to review and discuss and current preventive and healable measures of heat illness and abstract scientific programs to prevent and cure heat illness.In order to suit with the PLA"s current fight direction and to improve the army"s capacity and levels of the rear service, to keep soldiers healthy and strong in the heat stress environment, by the way of systemic evaluation, we collect a series of successful work and research experience about the heat illness prevent and treatment. After analyzing and comparing these results, then based on the theories of the preventive medicine, we have try out further adaptable programs to prevent heat illness. It consists of 5 chapters, such as "heat acclimatization, water and electrolyte supplement, regulated work/rest cycle limits, lower temperature equipment, drug preventing heat stress".

为有效降低热环境因素对部队的威胁，提高部队的战斗力和应急保障水平，有针对性地形成热区部队中暑防治保障预案，与目前特定的作战方向相适应，我们根据部队当前状况，立足部队应用，大量收集了有关文献，通过应用系统的评价方法，对耐热锻炼、水盐补充、调整作息制度、防暑降温装置和药物防暑这几项主要防暑措施的实施方法进行了全面分析比较和评价，提出了更进一步的修正意见，提炼出了适合当前部队应用的方法，使其更加适于部队的应用；同时，还对中暑急救与治疗方面的有关文献也进行了概括和总结，并根据中暑的发病特点和救治重点，为部队中暑的救治设计了现场急救装置。

The thesis advances a new optimality design method which can consider stress and proper frequency restriction condition synthetically, through basing on stress optimality criteria methods, owing to optimality criteria don't relate to multi-constraint and apply incomprehensively.

本文针对优化准则法不能考虑多种优化约束条件、通用性差的缺点，基于应力优化准则法和固有频率优化准则法，提出了一种可以综合考虑设计模型的应力约束条件和固有频率约束条件的优化设计方法。

Considering its complex geometric topology, multi states of self-equilibrium stress and modes of inextensional mechanisms, a prestress optimization strategy was proposed to solve the final feasible prestress distribution problem of the structures with multi states of self- equilibrium stress, where the decomposition and assembly method of modal matrix, the theory of structural equilibrium matrix and the singular value decomposition method were utilized.

考虑该结构几何拓扑复杂、多自应力模态与机构位移模态的特点，应用平衡矩阵理论与奇异值分解算法，通过模态矩阵的分解组合方法，给出一种具有一定普遍意义的预应力优化策略，使多自应力模态结构体系的最终可行预应力分布求解得以简便的实现。

It provides a basic theory for the deformation property of combined torsion members. With the method, this paper, for the first time, discusses the nonlinear complete process analysis of high-stress concrete members subjected to combined force. It revises the strain-stress relationship contain of intenerate of concrete and simplifies the baroclinic theory of concrete. The calculation result fits the test result well, which proves that membrane-element theory is suit to reinforced concrete combined torsion members.

应用这种方法，本文首次对高强钢筋混凝土压弯剪扭复合受力构件进行了非线性全过程分析，对考虑软化的混凝土本构关系进行了修正，对混凝土斜压场进行了简化，经分析计算与试验结果对比符合较好，说明薄膜元理论对钢筋混凝土复合受扭构件受力行为的全过程分析是一种有效的方法。

The mean interlaminar shear stress mechanism is analyzed and shear stress analytic model constructed.

并建立了平均层间剪应力的解析模型。

On interlaminar stress is studied finally, and the relationship between maximum interlaminar stress and layer angle is achieved.

关键 词：复合材料；层合板；层间应力；数值分析；有限元软件

The analytical expression of axie displacement, axie stress and interlaminar shear stress were given under some simple loading forms.

给出了一些简单载荷作用下的轴向位移、应力及层间剪切应力的解析表达式。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。