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1)  bedding joint
层状节理
2)  layered and jointed rock masses
层状节理岩体
1.
Using physical simulation method,the variety laws of elastic modulus E with the rock-layer thickness h and the fragmentation degree a,the cube root of rock block volume,of the layered and jointed rock masses under cyclic load with and without bolt support are studied in detail.
运用物理模拟方法,研究了在循环荷载作用下层状节理岩体非锚固与锚固模型的弹性模量E随岩体分层厚度h和块度a(岩块体积的立方根)的变化规律。
3)  joint attitude
节理产状
1.
Joints are crucial factors in rock masses engineering,so using stress waves to invert joint attitude is a valuable practice.
节理对岩体工程有重要的影响,采用应力波反演节理产状有重要的工程意义。
4)  columnar joint
柱状节理
1.
By observing the joints,three kinds of joints were distinguished: planar joints,"reverse fan-type" columnar joints and "orthotropus-type" columnar joints.
经过系统观察认为此处存在三类火山通道相节理:面状节理、"倒扇型"柱状节理和"直立型"柱状节理。
2.
Rhyolite with columnar joints has been found in the lower Cretaceous Yingcheng Formation,in an uplift area of the southeastern Songliao Basin.
松辽盆地东南隆起区下白垩统营城组出露柱状节理流纹岩。
5)  prismatic joint
柱状节理
1.
The prismatic joint characteristics of the Mesozoic rhyolite of the Shanmen, Siping, Jilin Province and its origin significance;
吉林省四平市山门中生代流纹岩柱状节理特征及成因意义
2.
In Shanmen,Siping,Jilin province,the early Cretaceous rhyolite has typical distributive characteristics of the paleovolcanic apparatus,preserving rare,well-developed prismatic joint.
四平山门早白垩世流纹岩 ,具有典型的古火山机构的分布特征 ,保存着罕见的发育完整的柱状节理。
6)  sheet joint
席状节理
补充资料:含铋层状氧化物铁电体
分子式:
CAS号:

性质:化学通式为:(Bi2O2)2+(Ax-1BxO3x-1)2-,式中,x为钙钛矿层厚度方向的元胞数,其值为1~5;A为较大阳离子,配位数为12;B为较小阳离子,配位数为6。A、B离子组合应满足∑XAVA+∑XBVB=6x,式中,x为相应于A、B位离子浓度,V为相应于A、B位离子的离子价态。这类层状氧化物中凡具有铁电行为的化合物就称为含铋层状结构氧化物。其结构是由二维钙钛矿层和层有规则地相互交替排列而成,沿层面具有较好的解理性。自发极化强度较高。压电性能和介电性能的各向异性大。居里温度高。自发极化强度、机械品质因素、频率的时间稳定性和温度稳定性都较高。常规陶瓷工艺很难获得致密烧结体,需用热压烧成新工艺。:PbBi2Nb2O9,BaBi2Nb2O9,SrBi2TaO9,Bi4Ti3O12,PbBi4Ti4O15,PbBi4Ti5O18等属这类铁电体。用于制作滤波器,换能器等。

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