查询词典 strata

These strata, lying apparently in contact, are in fact abysmally separated.

这些表面上相触的地层实际上相隔很远。

In order to implement simultaneous casing while drilling of larger diameter pile holes and water wells in complex strata, a new type of bit for simultaneous casing while reverse circulation drilling with DTH air hammer was developed.

为实现在复杂地层用同步跟管钻进工艺钻凿直径较大的桩孔和水井，设计了一种气动潜孔锤反循环跟管钻进钻头。

This is obviously influenced by the base level up and down changings, pore space variation and sediment alimentation. Through analysing the relationship between the course of base level up and down cycles of high resolution sequence strata and the reservoir physical behavior, six heterogeneity models of diff...

通过高分辨率层序地层的短期基准面升、降旋回过程与储集物性关系的分析，建立了6种不同沉积微相的非均质性模式，探讨了向上变深、向上变浅的非对称型和向上变深后复变浅的对称型短期基准面旋回层序对储层非均质性特征的控制作用

The strata in this section cover three lithostratigraphic units, seven conodont zones, five ammonoid zones and three bivalve zones. Two normal and two reversed magnetic polarity zones as well as the cyclic sequences corresponding to the Milankovitch climate periods driven by the Earth's orbit are well recognized in the lower part of the section.

该剖面包括3个岩石地层单元、7个牙形石带、5个菊石带、3个双壳类带；在剖面下段地层中识别出2个正向磁性带和2个反向磁极性带；与地球轨道天文周期相对应的Milankovitch气候沉积旋回也可以明确地辨认；碳氧同位素δ13C演变呈现两次大的旋回。

By a study of top coal drawing method modelling with analogue material in laboratory, this paper presents the movement law of overburden strata and the ground presure mantfestation character of top coal drawing faces,at the same time,sets up the ground pressure structure model of top coal drawing faces.

通过对放顶煤开采方法的实验室相似材料模拟研究和现场矿压实测资料的分析，文章提出了放顶煤采场上覆岩层移动规律和采场矿压显现特征，同时还建立了放顶煤采场矿压结构模型。

In practical study, the essential flow is""on the basis of the study of the faults, strata denuded thickness and original thickness, analyzing the controlling effect of the faults to the sedimentation and denudation, and combined with the areal geology background, reconstructing the basin prototype of each stage"". 2. As the basic theories and methods of the calculation of the denuded thickness, such as, the methods of cosmogenic nuclides, wave equation, apatite fission track, structural sections, acoustic wave, vitrinite reflection, etc, were argued detailedly , and their applicable ranges were analyzed , the denuded strata thickness of each structural layer layer of pre-Tertiary was reconstructed.

对宇宙成因核素法、波动方程法、裂变径迹分析法、构造横剖面法、声波时差法、镜质体反射率法等计算剥蚀量方法的基本原理进行充分论证、改进，分析了各方法的适用范围，在此基础上，综合充分运用上述方法，计算了济阳坳陷前第三系各构造层在不同时期的剥蚀量，绘制了中生代时期古生界顶面的地层剥蚀量等值线图、新生代时期古生界顶面的地层剥蚀量等值线图、白垩纪沉积时侏罗系剥蚀等值线图、新生代沉积期白垩系剥蚀等值线图、新生代沉积期侏罗系剥蚀等值线图等图件，并通过对古生界地层的热变质程度分析，确定了有1500～2000m的早、中三叠世的原始沉积地层在晚三叠世被剥蚀殆尽。3。

The multiphase tectonic activities above clearly controlled the move and gather of salifying brine, the strongth of salt-forming and the deposition of salt-bearing strata. With the pass of time, the salt-bearing strata thickened gradually from northwest to east and southeast, and the distribution of the thickness trended towards complicated; the measurement of the halite deposition extended towards east too; in the early Palaeogene and the Neogene, strong multiphase tectonic activity was a disadvantage to salt-forming, but in the middle and late Palaeogene, weak multiphase tectonic activity, which resulted in slow and sustained subsidence of the basin, was greatly advantaged to it, especially to potash-forming.

古近纪和新近纪成盐卤水的迁移和聚集、成盐作用的强弱以及整个含盐系的沉积发育明显受到上述构造活动的控制：含盐系的厚度随时间由北西向东、向南逐渐增厚，且厚度分布逐渐趋于复杂化；石盐岩的沉积规模和范围也逐渐向东扩大；古近纪早期和新近纪强烈的构造活动对于成盐作用而言是一种干扰因素，而古近纪中、晚期相对较弱、导致盆地缓慢持续沉降的构造活动对成盐，尤其对成钾作用则极为有利。

According to these theory study conclusion, attaching the on-the-spot data, taking the fracture and elastic-plastic mechanics knowledge as the foundation and the key strata theory as the instruction and considering overburden character, mining height, parameters of working face and crack-expansion characteristics of caving rock, a new method from the mechanism angle by studying on failure conditions of underground-induced strata and judgment method of water-flowing fractured zone's height is elicited.

在这些理论研究成果的基础上，结合现场调查资料，以断裂力学和弹塑性力学知识为基础、以关键层理论为指导，综合考虑覆岩岩性、煤层采厚、开采尺寸、冒落岩石的碎胀性等因素，研究了采动岩层的破断条件和导水裂隙带高度的判断方法，从机理角度获得其高度预计的新方法。

The water-bearing sand strata section from DK355+494 to DK355+517 of Xingwangmao tunnel has been successfully consolidated by horizontal jet grouting piles. The construction technology and construction method of consolidating sand strata by horizontal jet grouting piles are presented in the paper.

结合兴旺峁隧道改DK355+494～+517段含水砂层采用水平旋喷桩加固的成功实例，介绍水平旋喷桩加固砂层的施工工艺及方法；并对施工所需的人员、设备配制以及在施工过程中出现的&抢钻&、&断桩&与&短桩&的处理方法进行简单介绍。

Simulating model test is firstly carried to manifest there must have certain structure in roof strata about roof research. Secondly, discretion formula of roof destruction is obtained by simplifying roof strata to elastic thin board.

对顶板的研究中，首先运用相似模拟实验直观表明开采过程中顶板岩层中存在一定的结构体；其次将分段开采后顶板岩层简化为四边固支的弹性薄板，得出了顶板破断的判别式。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。