查询词典 geologic time

The result shows that the numerical calculation based on strength reduction echnique can not only consider the geomorphy, geologic structure and reinforce measure but also the constitutive relationship of rock and the interaction between structure and slope.

研究表明，基于强度折减法的数值计算可以像数值模拟方法那样既考虑三维效应明显的地形地貌、地质结构和加固方式等，又考虑岩土体的本构关系和支挡结构与坡体的相互作用，还可以像极限平衡法那样计算安全系数，却不用指定滑面。

Finally, proposing a new concept of "geothermometer," and which may be very useful in geologic research. The results of this preliminary study may be extended to other kinetic reactions of various minerals.

本研究为一初步研究，未来可针对其它矿物的动力学反应进一步探讨这些动力学方法的适用性，并设计新的实验方法以得到更好的实验与分析结果。

Density variation must be considered in researching sedimentary basin and its internal geologic structure with the use of gravimetric data.

沉积岩的密度是随深度而变化的，用重力资料研究盆地及其内部构造时必须考虑变密度的情况。

In literature[1] Thrust Belt Structure and Significance for Petroleum Exploration in Hala'alat Mountain in Northwestern Margin of Junggar Basin, the Triassic and Permian strata in Heshituologai basin, which were used for supporting its proposed tectonic pattern s, are in big differences compared with the actual geologic data.

在《准噶尔盆地哈拉阿拉特山冲断带构造及找油意义》一文中，用于支持其构造模式成立的和什托洛盖盆地的三叠系和二叠系具有很大的推测成分，与实际地质资料差别大。

The geologic and hydrographic conditions are complex,so it is very difficult for freezing design and construction.

赵固二矿风井筒穿过的冲积层厚度达到528.85 m，地质、水文地质条件复杂，冻结设计和施工难度较大。

At first it analyzes the bedding rock slope"s bedded rock and its incontinuity face, and studies the stress, strain, stability"s condition of the bedding rock slope, fully considering the cohesive force of rock layer and incontinuity face.Geologic mechanics models of two types of bedding rock slope are set up, the instability coefficient of bedding rock slope under different mechanical parameters is computed, and the conclusion that the stability of bedding rock slope is relation to rock layerer, cohesive force of incontinuity face, inner friction angle and rock layer obliquity has been gotten.

本文首先对顺层边坡的层状岩体及其中的层理面和不连续面进行了分析，对其应力应变进行了研究，得出了顺层边坡的稳定性不仅与岩体中岩石的强度有关，还与岩体中层理面及不连续面的内聚力、内摩擦角及其倾角有关；论文建立了层理面和节理面的地质力学模型，讨论了其力学参数变化对边坡稳定性的影响，并在此基础上将层理面和节理面归纳为顺层边坡稳定性的结构面影响因素，同时讨论了影响顺层边坡稳定性的其他因素，从而得出顺层边坡稳定性的评价预测指标。

The geology-economy evaluation of urban land is a new concept which is put forward on the basis of the inharmonic contradictionbetween land use and geologic environment and problems neglecting thefactors of geological environment in working out land prices.

城市土地地质经济评价是根据城市建设中存在着土地利用与地质环境不协调的矛盾，以及制定土地价格时忽略地质环境因素而提出的新概念。

The geology-economy evaluation of urban land is a new concept which is put forward on the basis of the inharmonic contradictionbetween land use and geologic environment and problems neglecting thefactors of geological environment in working out land prices.

王建瑞 赵占元河北地质学院，石家庄 050031）摘要：城市土地地质经济评价是根据城市建设中存在着土地利用与地质环境不协调的矛盾，以及制定土地价格时忽略地质环境因素而提出的新概念。

But the strata with high ground water level are composed of alluvium clays、 silty clay、 gravels and crushed stone soils in Chengdu;And the shield will drive in the interzone with complicated geologic environment, especially in the strata contained more than 50 percent of gravels which diameter is greater than 5cm, also contained big grain size gravels(the maximum diameter is about 1m)、 cement gravels and silty sand with lentoid mass;And on the ground there have many serried buildings in the prosperous zone.

而成都地铁工程将主要穿越由冲积粘性土、粉土、砂砾和碎石类土组成的覆盖层，地下水位高，盾构将通过大量地质条件和环境条件均极为复杂的区间，特别是地层中还夹杂有大漂石、胶结砾石层、粉细砂透镜体，隧道围岩中直径大于5cm的砾石含量一般都在50%以上，最大的漂石直径达1m左右，且地面多为建筑物密集的繁华地区，施工难度大，国内尚无先例，在国外也无完全成熟的经验。

Geologic evidence ; Mesozoic mantle enrichment ; Early Jurassic mafic ultramafic intrusion ; Meizhou of Guangdong Province

地质学证据；中生代地幔富集作用；早侏罗世基性超基性岩体；广东梅州

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。