fracture strain是什么意思

你好这位朋友,cleavage和fracture是医学上有关骨质等身体组织断裂的两个容易混淆的概念.国外众多医学院官网和教材对此都有说明,在此我引用如下.
先来个简单的区分：
Cleavage -- splits easily along flat surfaces; splits but along its weaker zone
Fracture -- is smooth and curved or jagged with sharp edges
再来个细节说明：
Cleavage occurs when a rock breaks along smooth planes that are parallel to areas in which the mineral has weak bonds.By contrast,rocks are said to fracture if they break irregularly,because the mineral does not form planes of weakness.
Cleavage can occur in several different ways.Some minerals,such as gypsum and muscovite,only exhibit cleavage in one plane.Some minerals,such as halite,cleave to produce cubic particles.This occurs because the rock cleaves in three separate directions and each of the directions is oriented 90 degrees away from the others.Calcite,by comparison,cleaves at angles of 120 degrees and 60 degrees,producing rhombohedral shapes.Quartz does not exhibit cleavage at all,as it fractures irregularly.
Some minerals exhibit perfect cleavage,in which no rough surfaces are produced at all.Others only exhibit good cleavage.Such minerals may exhibit some irregularity in the cleavage,but the amount of roughness is minimal.Poor cleavage occurs when the amount of rough surfaces dominate the amount of smooth surface area.Indistinct cleavage occurs when a mineral cleaves,but the smooth faces are so small that they are not noticeable.
如果你是在用英语学习医学,以上的说明应该已经足够你参考了,:-)

fracture
vt.& vi.（使）折断，破碎;
n.破裂，断裂; 骨折;
rupture
n.断裂，破裂; 友好关系的决裂; [医]疝气;
vt.& vi.使破裂; 断绝（关系等）; 发生疝; 使不和;
vi.破裂; 发疝气;
前面那个，主要指物体，后面这个，主要是说人与人之间
请采纳

断裂强度的碳化硼载体,
b4c/bn microcomposites和b4c/bn纳米复合材料的逐渐下降,随着压痕负荷
压痕负荷意思

Fracture mode is predominantly ductile in base metal.
断裂类型在贱金属中其延展性在其性能上是占主导地位的.
However,there exists intergranular fracture in the
weld metal.
然而,在焊接金属中还存在晶间断裂.
The transition of fracture mode from base
metal to weld metal may lead to dramatic decrease in
fracture toughness.
贱金属断裂类型过渡到焊接金属可能导致断裂韧度的严重减退.

当数据显示,脆性断裂机制(图2 a,b)和韧性断裂的截然不同的解释虽然都需要前塑性变形.脆性断裂机理解释了影响位平堆积(图2 a,b),而韧性断裂机制(图3)解释了成核和发展的孔洞周围包裹体、分离.这意味着两种不同的理论应用在这里:骨折脱位的理论下的脆性断裂理论和修改的多孔体的情况[6]延性断裂.问题.由于缺乏上述理论之间的衔接过渡的原因,tleness延性》(图2 d)不能清楚地解释.此外,上述模型的韧性断裂机制并不能解释断裂的纯金属或断裂的monophase金属合金.该模型也没有产生任何标准来控制的弹道剪切断裂.由于它是不可能控制的弹道剪切断裂,几个技术问题,结合,例如、精密模具剪切和类似的工艺、起来.也就是问题解决的剪切断裂理论轨迹控制条件下的绝热剪切带(图4)

B正确.
因为这是形容词短语作状语 符合逻辑
选项A是非限制性定语从句 虽然语法正确 但 是一句废话

塑木合成材料的断裂现象

i have a fracture in my leg/arm.
i fractured my leg/arm.

(是不是车辆方面的?)
“保险杠的折损和油漆的脱落情况可以用来评价它折裂的情况~”
翻译拙劣……
楼主加油~

需要测定在折断后的拉伸强度断裂伸长率,以及0.2%的弹限强度.另外,单对奥氏体钢来说,1%的弹限强度也应测定.

我是学石油的,帮你下忙.水平有限,不一定全对
在酸化压裂过程中,对地层的压裂不仅会形成条虫状孔和通道,被腐蚀的非光滑裂缝表面在其缝合处也会打开通道.由于地层应力的影响,那些产生的裂痕趋向于合拢.
有助于减少酸化压裂中裂缝导流能力的因素有以下三个：
1 弹性响应
2 接触点的压裂失效（表面粗糙）
3 蠕动效应