When they detect an extended dry period, they divert their metabolisms, producing sugars and certain stress-associated proteins and other materials in their tissues.
当它们发现干旱期延长时，它们会改变自己的新陈代谢，在它们的组织中产生糖和某些与应激相关的蛋白质和其他物质。
Scientists have long known about naturally occurring piezoelectric materials, which have the ability to transform electrical energy into physical stress and vice versa.
长期以来科学家一直对压电材料的性质产生浓厚兴趣，这些材料可以将电能转化成为物理压力，反之亦然。
For the Ergon Biokork bike grip, the designers spent time honing the shape, to reduce hand stress — but they lavished care on the materials as well, to make sure they were all renewable.
ErgonBiokork车把的设计师花了大把时间琢磨其形状以降低手部压力。但他们也非常注重其用材，以保证其可更换性。
The teams recommended a variety of improvements in lightweight composite structures, heat- and stress-tolerant engine materials, and aerodynamic modeling that can help bring their ideas to reality.
这些团队为轻比重的合成材料结构、耐热和耐应力的发动机材料、有助于实现其设想的空气动力学模型提出了不同的改进建议。
These are materials which can translate electrical fields into mechanical stress, or vice versa.
这类物质可将电场和机械压力相互转换。
Based on relevant materials, the calculation of temperature stress of round hollow piers in stress checking is introduced for reference.
本文根据有关资料介绍了圆形空心墩在应力检算时温度应力的计算方法供参考。
Sensitive materials under low stress will suffer breakage which brings about large risk explosion of pressure bearing pipe and equipment is easily to be triggered causing major accident.
对于敏感性材料，在低应力水平下也会发生断裂，危险性很大，容易引发承压管道和设备的爆破，造成重大事故。
The stress in ferromagnetic materials was studied by measuring the change of the amplitude of ultrasonic wave with electromagnetic acoustic transducers.
本文主要是对用电磁声换能器，通过测量超声波幅度变化来测量铁磁性材料内部应力的方法进行实验研究。
Piezoelectric currents are generated when mechanical stress is applied to certain crystalline materials when used for insulated terminals and interconnecting hardware.
某些晶体材料用作绝缘端子和连结件时，若向其施加机械应力，就会产生压电电流。
The orientations of polyurethanes resulted in a large number of the residual orientation , the stress softing and stress hysteresis , the permanent set , the higher modulus and strength of materials .
取向的结果，导致大量的硬段残留取向、应力软化、应力滞后和高变形，以及材料的高模量和高强度。
The mechanism of cutting brittle materials was studied, the impact model was established and the stress of impacting area was analyzed.
对脆性材料的切割机制进行研究，建立切割冲蚀模型，分析受冲击区的应力。
In this paper, fracture mechanism, position and direction of crack initiation of mixed mode fracture in several ductile materials are tested, and stress distributions of which are analyzed.
应用传统强度理论和细观力学方法对几种韧性材料在复合载荷条件下的断裂机理、启裂位置、开裂方向进行了实验分析和应力场计算。
These recycled materials are offered at lower prices for manufacturing parts for non-critical, low-stress applications.
这些再利用的材料为那些生产非关键和低压力的部件提供了低廉的价格。
The initial portion of the stress-strain diagram for most materials used in engineering structures is a straight line.
在工程结构中使用的大部分材料最初的应力应变图是直线型的。
Not all materials produce stress-strain diagrams on which there is a clear indication of the start of yielding as the load is increased.
不是所有的材料都会产生应力-应变图，即当载荷增加时显现出开始屈服的迹象。
The research results show the force sensors can be constructed using amorphous alloy materials with high stress sensitivity.
研究结果表明具有大的应力敏感性的非晶带材料可用来制作力传感器。
At the same time, how to establish the failure criterion of brittle materials in biaxial stress state is one of people's goal.
与此同时，如何建立脆性材料在双轴应力作用下的破坏准则一直是人们所追求的目标之一。
The stress conversion and compensation effects in high polymer insulating materials under high electrical field have been studied.
研究了高分子聚合物绝缘材料在强电场下发生的应力转化与补偿现象。
For the brittle ceramic materials, flexural strengths are determined by the stress at fracture in transverse bending tests.
对脆性陶瓷材料来说，抗弯强度即为横向弯曲试验中样品断裂时的应力。
A considerable amount of theoretical and experimental research on strength theory of materials under complex stress state was done in the 20th Century.
在20世纪，关于材料在复杂应力状态下的强度理论进行了大量的理论研究和实验研究工作。
In the design of axles bearing moment of torsion and bending, it is necessary reinforce stress of materials according to the real conditions of the enterprises.
在设计承受扭矩和弯曲的轴类件时，一定要从本企业的实际情况出发，来实现材料的仿应力强化。
The response of stress gauges embedded in shock loaded materials is important in the field of dynamic measurement.
埋入材料中的应力计在动态载荷下的响应是动态测试领域中一个重要的课题。
The stress testing based on counter magnetostriction effect of ferromagnetic materials is a new technique.
基于铁磁材料逆磁致伸缩效应的应力测试是一种新技术。
Through the analysis of test results and stress fields, the change of metal materials' ductile fracture mode with different stress condition parameters are discussed.
通过试验结果与应力场分析，讨论了不同应力状态参数下，金属材料韧性断裂形式的变化规律。
X-ray diffraction analysis: analyzing the microstructure of materials, such as phase qualitative, quantitative analysis, stress testing and structural analysis.
射线衍射分析：材料结构的微观分析，如物相定性、定量分析，应力测试，织构分析等。
Selecting proper glass materials can make opposite stress in Pt film and opposite anded resistance due to thermal mismatch.
选择适当材料的玻璃层，使热失配在铂膜内产生相反的应力，从而造成相反的附加电阻。
To increase component of grinding force ratio can increase principal stress extreme values in grinding stress field. Materials can be removed by brittle fracture.
粗加工中，增加磨削分力比可以增大磨削应力场中的主应力极值，有助于材料的脆性去除。
The measurement of the value and distribution for micro-residual stress in materials was crucial and difficult for micro-fracture theory.
测量材料微区残余应力的大小和分布，对于研究微观断裂机制具有非常重要的意义，一直是研究的热点和难点。
A new developed technique in nondestructive testing for residual stress of the ferromagnetic materials is discussed.
讨论了一种检测铁磁材料内部应力的无损检测新技术。
A new developed technique in nondestructive testing for residual stress of the ferromagnetic materials is discussed.
讨论了一种检测铁磁材料内部应力的无损检测新技术。
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