Structure characteristics show that helan mountain was in extensional environment in late triassic and no obvious compressional evidence in early - mid jurassic 构造特征分析表明，在晚三叠世贺兰山地区处于拉张环境，早中侏罗世构造环境亦无明显挤压迹象。
The extensional and transtentional structure existed in huabei belongs to vent fault , fracture is mainly stepwise normal fault , whose preservation condition is not good 华北地区多为张性，张扭性构造，属于排气断层，形成的断裂多为阶梯状，以正断层为主，保存条件欠佳。
In extensional flow fiber tended to perpendicularity to the streamline , while in shear flow and convergent flow fiber tended to parallel to the streamline in the thin wall caving 在薄壁型腔的扩张流中，短纤维趋于与流线方向垂直，而在剪切流和收敛流中趋于与流线方向一致。
The round columnar joints show that the dyke swarms are in upper crust brittle tectonic setting , and the western shandong block is brittle extensional in the mesoproterozoic time 岩墙发育圆柱状节理表明岩墙侵位时地块已经处于上地壳脆性构造环境,中元古代鲁西地区是一个脆性伸展的大地构造环境。
But besides being characterized by the extensional semantics , first - order logic can be characterized soundly and completely by such an intensional semantics that includes nothing but the property entities 相对于这一外延语义，一阶逻辑还可为其中只含属性实体而不含个体对象的内涵语义一致且完备地刻画。
According to most theories , the prevailing forces in the sicilian crust are similar to those in rift zones ? extensional stresses that cause thinning of the crust and upwelling of the underlying mantle 根据大多数的理论，西西里岛所在的地壳，主要遭受到的应力与张裂带类似：张力使地壳变薄、下方地函上涌。
The structure units are redivided . the main structure style of chagan fault depression is summarized , in which the extensional structure are the principle part . its kinematics characteristics are analysed 对查干凹陷的构造单元重新进行了划分，总结了查干凹陷的主要构造样式，伸展构造是主体，并对其运动学特征进行了分析。
Knowing the tectonic background under which , basins formed helps determining their geomechanical natures ( extensional , compressional and shear ) in each developmental phase and full understanding of the sedimentologic character and geothermal evolution of the basin 理解盆地的构造背景有助于确定它在不同发展阶段的地质力学性质（拉张、挤压、剪切） ，有助于充分理解其沉积特征与地热演化。
The extensional activities of hefei basin occurred in the period between late cretaceous and paleogene . as a result , the extensional normal faults were took place along the pre - existing nearly ew faults and the tan - lu fault zone . the deposition of half - graben was formed 合肥盆地的伸展活动发生于晚白垩世至早第三纪，伸展活动是叠加在前两期走滑构造之上，形成了以半地堑式楔形为主的沉积。
In addition , the mafic dykes of hainan island were formed in an intraplate extensional environment , similar to the mafic dykes in north guangdong and fujian coastal areas , all suggesting an extension regime tectonic in southeastern china during cretaceous 白垩纪基性岩脉( 81 135ma )形成于板内拉张环境，与粤北、福建沿海地区的白垩纪基性岩脉共同指示了中国东南部白垩纪时期处于拉张的构造环境。
