伸力

By applying electromagnetic vibration on solidification front of Sn-10Pb alloy,creation of equiaxed grain zone in ...

在低强度电磁振荡条件下，凝固组织细化和等轴晶化的原因是：电磁振荡力对金属初生晶的周期性拉伸、压缩、剪切、折弯、扭转等机械作用，使其出现断裂和剥落，增加形核数量；电磁振荡的局部搅拌作用使固/液界面前沿的温度和成分趋于均匀化，导致梯度降低，抑制了柱状晶的生长。

Apart from the freestyle lumbar posture, subjects were instructed to take either lordotic or kyphotic posture as well.

姿态改变时，椎间盘的倾斜度，伸肌活动方向改变，这能影响不同节段脊椎的剪力。

Molecular dynamics simulation has been used to investigate the force-induced unfolding of mesophilic cold shock protein, finding that the unfolding process occur through intermidate states.

当使用机械力对嗜温冷休克蛋白进行拉伸研究时，发现嗜温冷休克蛋白的去折叠过程具有明显的中间态。

Methods: Eleven healthy young male volunteers enrolled in this study. Testing MVC of back extensor before the experiment. The experiment collected sEMG signal at which T12-L1 segment lumbar multifidus and L5-S1 erector spinae in different directions, with different load ways, different load levels and different road conditions.

10名健康青年男性志愿者，实验前测试其背伸肌最大随意收缩力，采集被试在不同方向上的躯干运动时与不同负荷方式、负荷等级及路面条件下行走时T12-L1节段左右侧竖脊肌与L5-S1节段左右侧多裂肌的sEMG信号。

Weibull distribution function is used to characterize phenomenologically the debonded probability of the interface, which is decided by the tensile stress of the particle. A partially debonded isotropic spherical elastic particle is replaced by an equivalent, perfectly bonded spherical particle, which possesses yet unknown transversely isotropic elastic moduli. The fictitious particles can be determined in such a way that their tensile and shear stresses will only vanish in the debonded direction.

认为颗粒增强金属基复合材料的界面脱黏受控于颗粒所受的拉应力，引入Weibull分布函数描述颗粒脱黏概率，且受单向拉伸载荷作用时，仅在沿受力方向的上下两侧发生部分界面脱黏，从而将部分脱黏的各向同性颗粒由一完好的横观各向同性颗粒来等效，建立了部分脱黏模型。

Both a reduction of the subluxation of the base of the first metacarpal and an opening or distraction of the trapeziometacarpal joint, with a clear decrease in the forces of attrition on its joint surfaces, are thereby obtained.

随着关节表面磨损力的明显降低，第一掌骨基底部半脱位的复位和对大多角骨掌骨关节的开放或牵伸即可以实现。

Results: The posterior margin separation of centrums was more obvious than anterior margin separation in cases with traction from anteflection position of 10 degrees, while the most increases of intervertebral space occurred in cases with traction from neutral position.

颈椎牵引在中立位时对椎间盘的轴向作用最大，前屈位时受力集中在椎体后缘，后伸位转移到后侧小关节。

A process for manufacturing seamless flux-cored welding wires 0.8 to 4 mm in diameter with excellent cracking resistance and primer proof quality and containing very little diffusible hydrogen suited for the welding of high-tensile steels and steel structures subjected to large restraining forces by dehydrogenating by high-temperature heating comprises the steps of heating a straight wire 8-15 mm in diameter by direct electric heating through a first and a second pair of roll electrodes spaced 2 to 5 m apart and a ring transformer disposed therebetween to a temperature between 620 and 1100 degrees Centigrade, cooling the heated wire to a temperature not higher than 500 degrees Centigrade with a coefficient of heat transfer not higher than 250 kcal/m2 h degree Centigrade, and drawing to the desired diameter.

一种用来制造直径0.8至4mm的、具有优异的抗裂缝力和底层涂料防护质量并含有非常少的扩散氢的、适合于焊接高强度钢和承受大约束力的钢结构的无缝药芯焊丝，通过用高温加热进行脱氢处理来制造的工艺包括步骤：通过经布置成相隔2至5m的第一和第二对辊电极并经布置在它们之间的环心变压器的直接电加热，把直径8至15mm的直焊丝加热到620与1100℃之间的温度；用不高于250kcal／m2h℃的传热系数把已加热焊丝冷却到不高于500℃；以及拉伸到想要的直径。

The influence of matrix toughness on the notch sensitivity and residual strength of composite laminates is discussed.

探讨了韧性对复合材料层压板缺口敏感性和剩余强度的影响，指出拉伸和压缩对材料体系的韧性有着不同的要求，应该根据结构的不同受力状态来选择材料体系。

Taking a parallel boom structure with dual hoisting points as an example, a calculation method for its loading in hoisting plane under deadweight is analyzed with two modeling modes of multiple span continuous outreaching beam and combined structure.

以双吊点水平式吊臂结构为例，用多跨连续外伸梁和组合结构两种建模方式，分析了其在自重荷载作用下起升平面内受力计算的方法。

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。