查询词典 strain at

Hydric and hydration gradients are measured by using the ''slice test'' and strain gradients are measured at various positions in the material layer using embedded strain gauges.

氢气和水化梯度是衡量使用''''切片检验和应变梯度测量在不同的岗位材料层使用嵌入式应变计。

Incurrent research, aiming at the rupture problem engendered in the shooting process of acertain 5.56mm automatic rifle, the strain and stress distributions on the cartridge caseunder the action of axial pull have been analyzed. Based on the theories of elastic-plasticmechanics and contact mechanics, a mathematic and physical model of the cartridge-caseand chamber system has been set up; and based on the platform of the general softwarepackage APDL of ANSYS for finite element analysis, a parameterized model of thecartridge-case and chamber system has also been established. The method for nonlinearFEA has been adopted to analyze the stress distribution on the entire cartridge-case andchamber system, and the method of contact element has been employed to investigate thecontact stress between the cartridge case and chamber, and then the influences of frictioncoefficient and locking space on the static and dynamic stress and strain response of thecartridge case and chamber to the action of power gas have also been discussed. On thebasis of a lot of numerical tests, a kind of element Plane13, which is concentrated incoupled computation of heat and construction, has been used finally to simulate thetransient response of the cartridge-case and chamber system to the power gas. Throughloading the temporary thermal characteristics of explosive gas in the procedure of emulate, the corresponding transient thermal stress distributed on the entire system under thecombined load of transient thermal stress and transient pressure has been obtained. Owingto these comprehensive considerations, the numerical results obtained in this paperrepresent the actual situations comparatively exactly.

本文针对某5.56mm自动步枪在工作中出现断壳的问题，分析了弹壳在轴向拉力作用下的应力应变；基于弹塑性力学及接触理论，建立了弹壳弹膛系统的数学、物理学模型，在通用有限元ANSYS软件的参数化建模工具APDL平台上，建立了弹壳弹膛系统的参数化模型；采用非线性有限元法计算了弹壳弹膛系统的整体应力，引入接触单元法分析弹壳和弹膛的接触压力，探讨了在不同的摩擦系数和不同的闭锁间隙对弹壳弹膛静、动态响应的影响；本文进行了大量的尝试，最后确定采用热、结构耦合单元Plane13，在计算中加载了火药气体的温度历程，成功的获得了弹壳弹膛系统在瞬态的热载荷和瞬态的压力载荷同时作用下弹壳弹膛系统的热应力数值解，考虑因素全面，比较真实的反映了弹壳弹膛系统在火药气体压力和热载荷下作用的情况。

This strain is able to degrade polycyclic aromatics such as naphthalene and biphenyl as well as monocyclic aromatics such as phenol. Under experimental conditions, strain DF51 is capable of degrading at concentrations of phenol ranging from 100 mg to 800 mg, which is catabolized mainly through the catechol 1, 2-dioxygenase pathway with a minor catechol 2, 3-dioxygenase pathway.

DF51。在本实验条件下，菌株DF51能够有效降解浓度范围为100-800mg L-1的苯酚，该菌代谢苯酚主要是通过邻苯二酚1， 2-双加氧酶催化开环途径进行，同时辅以邻苯二酚2， 3-双加氧酶催化开环，表明菌株DF51兼有混浊红球菌(Rhodoccocus opacus R7)和红球菌PNAN5Rhodoccocus sp。

We observed that cyclophosphamide-immunosuppressed adult mice were Susceptible to acute infection leading to death.4-8 week old C57 mice or outbred Kunming strain mice inoculated in-tracerebrally with HFRS virus A-16 strain and immunosuppressed with four 50mg/kg CY doses at days -1,+1,+ 2,+ 4 (day O:virai infection), developed a lethal disease94% m...

在第-l、+1，+2、+4天注射环磷酰胺50mg/kg体重(第0天感染病毒)，可使小鼠由隐性感染变为急性致死性感染，病死率为94％。在病死动物的脑，肺、肝、脾和肾等器官中，检查翻HFRS病毒抗原。这些器官显示微血管系统和实质组织的病变。这种成龄鼠模型可用于本病的研究。

With the above instruments, the effects of strain－rate history on the constitutive relations of the above two materials were also firstly investigated at different temperatures and prestrain rates and it is found that strain－rate history strengthen them and their strength under reloading increases with increasing prestrain rate.

研究表明，应变率历史对这两种材料均具有强化作用，其二次加载下的强度随预应变率的升高而提高，它们对应变率历史的敏感性则随温度的升高而降低。

The results showed that:(1) at low temperature, in the 752 eggs of the SS strain initially inoculated 639 of them hatched and 15 of them developed to the pupal stage, while in the 823 eggs of the RR strain initially inoculated only 470 hatched and 1 of them developed to the pupal stage.

2在适温下，虽然SS与RR品系之间在一些特性上存在显著差异，但总的说来差异不大，经生命生殖力表综合分析，SS和RR品系所表现的内禀增长率分别为0.2138／？

In terms of linear strain assumption and the ten- sile strain development of CFRP at the tension side of bending section, the efficiency for CFRP used to strength- en the moment capacity of bending section is studied.

在应变平截面假定的基础上，本文借助分析承载能力极限状态下受拉区碳纤维片材拉应变的发展规律，研究了碳纤维片材用于受弯构件正截面加固的有效性。

The strain induced in the concrete at the cable level varies according to the bending moment diagram, while the strain in an external cable is uniform over the length of cable segment between two successive deviators or anchorage end.

在具体诱导有线电视一级的应变根据不同的弯矩图，而在外部电缆应力超过部分的电缆长度统一两个连续转向块或锚地结束。

Based on the experimental data of the strain of the geogrids at different embedments, a three dimensional strain surface that represents a function of coordinate and time is obtained. The time function for pull-out force of geogrids is deduced through integration of friction along total length of geogrids.

通过不同埋设位置的检测点所得到的格栅即时应变数据，拟合出格栅的三维应变曲面ε；对格栅表面上的摩擦力进行全段积分，得到格栅拉拔力的时程函数T。

The results show that the maximal rolling pressure and the maximal strain in rolling process don't appear in the same location; the plastic strain areas locates on the both sides of the edge at the fillet, resulting in residual compressive stress reached to strengthen the purpose of rolling.In the rolling process, must be reasonable to control the feed roll.

结果表明，滚压过程中最大滚压力和最大应变不是出现在同一位置，塑性应变区域位于圆角凹面两侧边缘，冷作硬化后产生的残余压缩应力达到了滚压强化目的；滚压过程必须合理控制滚压进给量。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。