Based on standard test method ASTM C1550 for fibre reinforced concrete (FRC), a modified round panel test method for the material performance of FRC by measuring crack opening width is presented.
在美国材料试验协会标准ASTMC1550圆板试验方法基础上，提出一种改进的基于裂缝宽度量测技术的纤维混凝土(FRC)材料静定圆板试验方法。
In the first four weeks after its opening, two years ago, 15 people were hurt while viewing Doris Salcedo's Shibboleth, a giant crack cut into the floor of the hall.
两年前，在开幕后的头四个星期内，多丽丝·赛尔萨埵（Doris Salcedo）表演《口令》时厅里的地板上裂了个大口子，造成15个观众受伤。
The sun's magnetic field near Earth has tipped south, opening a crack in Earth's magnetic defenses against the solar wind.
太阳在地球附近的电磁场已经偏向南方，在地球抵御太阳风的磁场防卫层上打开了一道口子。
Mouse looked through the crack in the wall to see the farmer and his wife opening a package.
一只老鼠透过墙上的裂缝看到农夫和他的妻子正在打开一个包裹。
Hence the "crab claw pattern", "fish-scale pattern", "ice crack" to explain the opening glazed Ru officer to seize a little piece are simply not take into account the rest.
因此用“蟹爪纹”、“鱼鳞纹”、“冰裂纹”来解释汝官釉面的开片都是只抓住了一点而没有顾及其余。
The effect on seepage is small when the opening of cutoff wall crack is less than0.3cm themaximum relative water head at the bottom of lower core wall is only2.02%.
防渗墙出现裂缝开度小于0。 3cm时，对渗流场的影响不大，防渗墙下游心墙底部最大相对水头值仅为2。 02%；
The measuring results in field show that the impact-echo method is effective in measuring the depth of surface-opening crack.
现场测试表明，该方法对开口裂缝深度的测试是相当有效的。
For crack-opening displacement tests, a specimen is notched and then fatigued by flexing to obtain a fine crack. Force is then applied until the crack begins to grow.
在裂纹扩展试验中，试样切口后使其弯曲并产生微小裂纹，在试件上继续加力直到裂纹扩大为止。
The results show that brittle fracture occurs in matrix and the P-WCMOD(crack mouth opening displacement) curve is linear till loading to failure.
实验结果表明：水泥基体发生脆性断裂，从加载到试件破坏P-WCMOD曲线一直呈线性；
A narrow opening, such as a crack or fissure.
裂缝：如裂缝或缝隙之类狭窄的裂口。
A narrow opening, such as a crack or fissure.
裂缝：如裂缝或缝隙之类狭窄的裂口。
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