1) top and bottom boundaries
顶底界
2) bottom and top beds
顶底界限
3) Top or Bottom Interface
顶底界面
5) base
[英][beɪs] [美][bes]
底界
1.
Resampling and restudy of the Penglaitan section reveal that Clarkina postbitteri cannot be used to define the base of the Lopingian because (1) The crinoid-bryozoan limestone at the top of the Maokou Formation just below the “first appearance” of this species reported by Mei et al.
蓬莱滩剖面的重新取样和再研究表明 ,Clarkina postbitteri不能作为乐平统底界的定义 ,因为 (1 )正是在 Mei et al。
6) roof and floor
顶底板
1.
Water inflow forecast from roof and floor in the deep area of No.1 panel;
深部首采工作面顶底板涌水量预计
2.
Based on analysis of characteristics of the roof and floor of each minable seam,this paper demonstrated some common issues occurring in underground working activities,providing reliable data for helping shaft geologists with their engineering design and construction and then contributing to mining activities in a better way.
通过对童亭井田各可采煤层顶底板特性分析,对不同顶底板岩性及采掘中遇见的问题进行了说明,为矿井地质工作人员设计、施工提供了可靠的地质依据,以更好地为矿井生产服务。
3.
On the basis of digital acoustic logging and density logging data, the stability of theroof and floor of the main workable coal seams in Hanzhuang wellfield of Qinshui coalfield,Shanxi.
根据数字声波测井和密度测井资料，讨论了山西沁水煤田韩庄井田主要可采煤层顶底板的稳定性。
补充资料：顶底复吹转炉的炉底(正在倾炉出钢)(宝钢)
顶底复吹转炉的炉底(正在倾炉出钢)(宝钢)
顶底复吹转炉的炉底(正在倾炉出钢)(宝钢)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条