弯曲点

A line traced by a point traveling in a constant direction; a line of zero curvature.

一个点在一个方向上移动所产生的线；有零个弯曲的线。

Moreover, the relation of stress intensity factor K_1 and load was presented by finite element analysis.

同时，对含预制裂纹的三点弯曲试验进行数值模拟，计算出Ⅰ型应力强度因子K_1随载荷的变化关系。

Results:① The distance between handle of malleus and stapes head was(2.38±0.19)cm(2.00～2.70cm), the point selecting for measuring was outer margin of handle of malleus and stpes head.②The cross section form of one_third of the handle of malleus at the end, was triangle, the anteroposterior diameter of handle of malleus was(0.79±0.12)mm, the exterior and interior diameter was(0.58±0.10)mm at the crook point,the angle of line of manubrium mallei laid(83.24±8.33)°(66～98°)posteroinferior to arch of zygoma.③The long axis of prosthesis formed(27.60±1.75)°(24.6～30.2°)angle with the perpendicular of stapes.④The dependablity between the malleus_stapes distance and transverse diameter of tympanum, the location of umbo in tympanic membrane, the diameter of manubrium mallei, angle of line of manubrium mallei and arch of zygoma were not statistically significant.

结果：①锤_镫距离最短为(2.38±0.19)cm(2.00～2.70cm)，测量点为锤骨柄末端1/3处外缘和镫骨头；②锤骨柄末段1/3横断面形状接近三角形，弯曲处前、后方向直径为(0.79±0.12)mm，内、外方向直径为(0.58±0.10)mm；锤骨柄与颞线的成角为(83.24±8.33)°(66～98°)；③赝复物长轴与镫骨垂直方向成角平均为(27.60±1.75)°(24.6～30.2°)；④锤_镫距离与鼓室横径、鼓脐在鼓膜上的位置、锤骨柄直径、锤骨柄的方位的可能相关因素之间相关性检验无统计学意义。

Based on the fictitious crack model and critical crack tip opening displacement CTODc, the precritical crack propagation length △ac of concrete was determined by means of three point bending beams. According to the calculation value of △ac, the effective fracture toughness KunIc of concrete was evaluated.

本文采用虚拟裂缝模型，将临界裂缝尖端张开位移CTODc作为控制参数，利用三点弯曲梁试件通过迭代求得了混凝土裂缝亚临界扩展量的临界值△ac，据此求得了混凝土起裂断裂韧度KiniIc、等效断裂韧度KunIc值。

Four-hole plate provides the strongest torsion fixation and quincunx shaped nail provides the strongest bending fixation.

4种内固定器中四孔钢板抗轴向扭转性能最好，梅花钉的三点弯曲刚度最强，对于胫骨骨折，Ender钉和矩形钉可以提供较好的稳定作用。

The three-bending test and axial torsion test were conducted on each specimens after the fracture been fixed by Ender nail,rectangle shaped nail,quincunx shaped nail and four-hole plate separately.

成中段横断骨折，依次安放双Ender钉，双矩形钉，梅花钉和四孔钢板，并进行前内侧和前外侧三点弯曲实验及轴向扭转实验。

The tension experiment on the model material was carried out, and its stress-strain equation was also obtained. The three-point bending experiment on the scale-down model was conducted under two different supporting conditions.

通过对护栏缩比模型进行三点弯曲试验研究，考虑了不同支座条件对变形和能量吸收的影响，归纳了失效试件的变形种类并计算了相应的变形能。

Calculation of the energy release rate with finite element method is conducted. The concrete beam model is meshed using a method without need of considering the crack-tip singular element.

采用有限元分析方法对三点弯曲混凝土梁的能量释放率进行了计算，在对混凝土梁进行单元划分时，避免使用奇异性单元来模拟梁的裂尖奇异性。

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可用的功能：自动修剪，作物， deskew ，倒装，是一面镜子，重新取样，大小，旋转，剪切，添加噪音，抗混叠，平均而言，弯曲，边界消除，亮度， buttonize ，色彩解析度，色灰，轮廓，对比度，圆筒形， despeckle ，扩张，点删除， dpi解析度，边缘检测， emboss ，侵蚀，腐蚀， Gamma修正，高斯模糊，辉光，梯度，灰阶，半色调， histocontrast ，孔冲床删除，色调，印象派，强度检测，反转，反转文本，拉普拉斯，删除线，线段，最高过滤器，中位数，闵过滤器，马赛克，运动模糊，乘， oilify ，旧照片， pixelate ，极地， posterize ， prewitt ，冲床，径向波，涟漪，饱和度，锐化，平滑，索贝尔，曝光，漩涡，锐化，波浪，及其他更多功能！

X 6 x 25 mm3 tested plates were cut from samples prepared from heating the PLLA powder at 220 oC under vacuum without pressure and gradually cooled from 220 oC until room temperature in a pot vented with nitrogen for one night. The crystallinity value of resultant samples was 43 %. These tested plates were implanted in the dorsal subcutis of S.D. rat after sterilization with ethylene oxide and removed at 1 d、3 d、7 d、21 d and 35 d intervals. These specimens were examined histologically with paraffin embedding section and resin embedding grounding section by light microscopy to evaluate tissue response. Three points bending test, viscosity and thermal properties were also examined.

使用日本岛津公司重量分子量21万之聚乳酸，以220 ℃热熔法，在氮气中自220 ℃缓慢降温产生结晶度43 %的聚乳酸，并切割成2 x 6 x 25 mm3试样，经环氧乙烯灭菌后，植入在Sprague Dawley大鼠背部皮下组织，经1天、3天、7天、21天、35天五个试验期间，以石腊及树脂标本之组织学观察，评估其组织反应并以三点弯曲强度、黏度及热性质检测，评估其物理性质变化。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。