外力作用

论外力作用形成的地质灾害的预报和防治

Forecast and control of geological hazard caused by exogenic process

巴西坚果如果没有外力作用，种子就会在壳内腐烂。

Brazil nut if does not have the exogenic process , the seed can in the shell rotten .

顺应性是指外力作用下弹性组织的可扩张性

Compliance is the dilating extent of elastic tissue below pressure .

结果表明：PVC的拉伸屈服强度随外力作用速度的提高而提高，断裂伸长率却随之下降。

The results showed that with the the increase of outside force velocity , the tension yield strength of PVC increased , but its breaking elongation decreased .

众所周知，声发射（AE）是材料在受到形变或外力作用时，迅速释放能量而产生的瞬态应力波，是进行结构诊断的重要依据。

Acoustic emission ( AE ) is stress wave produced when the materials are distorted , or under the outside load .

基于物理模型的B样条曲线变形在力学上类似于一根曲杆在外力作用下产生整体变形，其数学模型上就好像在原有曲线的基础上，加上了一条光滑的误差拟合曲线。

The deformation is just like a crooked stick to produce a deformation under the external forces in mechanics , or like a smooth error curve fitted by given conditions adding up to original curve in mathematics .

利用透射电镜（TEM）动态拉伸技术研究了外力作用下Al2O3短纤维增强Al－5.5Zn基复合材料的细观力学行为。

Microcracking characteristics of Al 2O 3 short fibre reinforced Al 5.5 Zn matrix composite were studied using a dynamic tensile technique of transmission electron microscopy ( TEM ) .

Fe-Mn合金的高阻尼特性主要归因于外力作用下马氏体孪晶界面及位错的往复运动。

The movements of twin interfaces and dislocations are responsible for the high damping properties of deformed martensite .

CZT晶体具有脆性，容易在外力作用下产生裂纹，以至破碎。

CZT crystal with its brittleness is easy to produce crack or crash under the external force .

从压电晶体的运动方程和压电本构方程出发，根据无外力作用时的压电耦合波方程，采用传统格林函数法对无外力作用时的SAW速度进行了求解。

Starting from the constitutive equation and motion equation of piezoelectric crystal , the SAW velocity is calculated by traditional Green function in free state , based on the piezoelectric coupling wave equation of the piezoelectric medium in free state .

通过有限汉克尔变换、Laplace变换及其反变换，获得压电圆柱体在冲击外力作用下的动应力和瞬态电势的解析表达式。

Utilizing the finite Hankel transform , Laplace transform and their inverse transformation , the analytical expressions of dynamic stresses and transient electric potential in the piezoelectric solid cylinder are obtained .

根据在水平外力作用下填充墙的应力分布规律，借鉴有关研究文献，建立了将填充墙简化为RC等效斜压杆的简化分析模型。

The simplified analysis model of equivalent synclinal compressive pole instead of the infilled walls is built according to the stress arrangment regulation in the infilled walls and referring to the research works of infilled walls .

因此，研究Burgers体在外力作用下的应力和应变，不仅具有流变学理论上的价值，而且有很大的现实意义。

Therefore , discussing the stresses and stra - ins of Burgers body under external forces has not only the theoretical import - ance in rheology , but also the practical significance .

证明了分子柔度F（ij）是相应内坐标Ri和Rj的固有常数，它表示分子在沿Rj方向的单位外力作用下达平衡时沿Ri方向的位移；

It is proved that the molecular flexibility f_ ( ij ), which represents the displacement along R_i when the molecule balances under the unit external force along R_j , is the natural constant of the corresponding internal coordinates R_i and R_j .

实验证实，由Si-SiO2-多晶硅之间的应力失配在外力作用下所引起的大量电子陷阱是导致CCD基线弯曲的根源。

Experiments show that large number of electron traps induced by the unfit stress on Si-SiO2-polysilicon interface at external forces are responsible for fluctuations of the CCD reference line .

方法利用光镊技术，对牛血清白蛋白（Bovineserumalbumin，BSA）封闭的玻璃小球间的非特异性作用进行了系统测量，得出不同加载率下的断裂力以及不同外力作用下的寿命分布。

Methods We used optical tweezers to quantify the non-specific interaction dependence of bond rupture forces on loading rates and of bond lifetimes on applied forces by measuring the adhesions between two BSA ( Bovine serum albumin ) - coated glass beads .

当拉伸倍率大于80%时，NH基团也发生取向，即在外力作用下，软链段较易取向，而硬链段的取向较难。

NH groups orient too when draw ratio is beyond 80 % , which indicates that it is easy for soft segments but difficult for hard segments to orient under the effect of outside force .

滑坡（landslide）是指斜坡上的岩体部分或者整体在重力或者其它外力作用下，沿软弱面整体或者部分向下滑动的地质灾害。

Landslide is a geological disaster , during which a part of a rock mass or the whole rock mass on a slope slides downwards along the whole weak plane or a part of the weak plane under the effect of gravity or other external forces .

GaAs的介电响应将向高频段转移，因此可以考虑通过施加外力作用达到改变GaAs电学性能的目的，改善其应用范围，如用作m级别的力学传感器。

GaAs dielectric response to the transfer of high-frequency band , it can be considered to achieve to change the electrical properties of GaAs purpose of improving its scope of application , such as a mechanical sensor nm level through the imposition of external force .

用双路100μA精密恒流源对CFRM应变传感系统进行激励，测量系统在外力作用下电压差的变化。

Using 100 μ A constant current for excitation , voltage difference of strain sensor is measured at external force .

结果表明：PVDF薄膜中的α晶相受均匀外力作用转变成β晶相，在80℃下拉伸5倍时，薄膜中β相的相对含量可高达77%。

As indicated by results , α phase in PVDF films is converted to β phase under constant external force , at 80 ℃, the relative content of β phase in films can be up to 77 % when the films are stretched 5 times .

这一模型的提出对CAFS系统产生泡沫应用于森林火灾扑救有重要指导意义，可用于预测外力作用下灭火泡沫的流动行为，充分发挥泡沫的阻火和灭火效能。

The origination of the model will be of great importance to the application of foam generated by CAFS in forest fire suppression both in fire direct attack and acting as a firebreak .

结果推上颌第一恒磨牙平均后移3.9mm时上颌第二双尖牙在没有外力作用下随之向后漂移平均1.63mm。

Results After the maxillary molars were pushed distally ( average 3.9 mm ), the upper second bicuspids drifted backward without extra force ( average 1.63 mm ) .

导出了3-RRR平面并联机构基于守恒协调转换刚度矩阵机构刚度结构位形部分的解析表达式和外力作用影响部分的不完全解析表达式。

The analytical stiffness equations of the part concerning joint stiffness and configuration and the uncompleted analytical stiffness equations of the part affected by external forces of 3-RRR planar parallel mechanism were all deduced , based on the conservative congruence transformation ( CCT ) stiffness matrix .

循环对称结构在外力作用下的模态特征及位移特性

Mode and displacement characteristics of circular symmetric structure under external forces

模具在外力作用下产生了失稳现象。

Mold showed the " instability " phenomenon under external force .

周期外力作用下某些二阶非线性微分方程的调和解

Harmonic Solutions of Some Second-Order Nonlinear Equations under a Periodic Force

周期外力作用下舶波型方程的强迫振荡

On the Forced Vibration of Popp Equations Under the Periodic External Force

复合外力作用下箱梁的应力计算与分析

Stress Calculation and Analysis of Box Beam under Combined Forces

在没有外力作用下，信息存储库趋向于往无序的方向发展。

Information repositories tend toward disorder unless acted on by an outside force .