岩石的

Common rock samples have been shown to have velocity orthotropy according to measured experimental results .

对岩石样品的测试发现，在普通岩石具有速度正交各向异性特性，既有定向排列的裂缝和岩石的结晶所致，也有层理与岩性特征构成。

In this paper the author discusses the petrography feature of the rock in the scale ductile shear zone and the characteristics of the shear belt.

本文主要从岩石学的角度论述了两条韧性剪切带内的岩石岩相学特征，讨论了韧性剪切带以及剪切带内岩石的特征。

Rock destroys the petrosal in the process sound blasts off to lead and can be led completely not consistent, sound launchs the metabolic rule that can lead relatively emissive rate behaves sound more sensitively, suit to be used more forecast petrosal to destroy.

岩石破坏过程中岩石的声发射率和能率不完全一致，声发射能率的变化规律较声发射率表现得更加敏感，更适合用来猜测岩石的破坏。

The properties of rock deformation and failure under the uniaxial compression are detailed.

0前言 岩石的变形断裂是岩石的重要力学特性，在工程实践中常常遇到单轴受压岩石的变形断裂问题。

All rocks release large fraction of argon between 300 and 700℃ except garnetiferous mica schist. The amount of argon released between 700 and 1100℃ has a positive relation to Ca/K value on the whole. The saturation implantation dose of rocks in this experiment is～10〓 ions/cm〓.

除含石榴石云母片岩氩放气峰在900℃以外，其它岩石都在300-700℃放出大部分氩气，所有岩石在1100℃以下都释放了其中大部分的氩气。700-1100℃放出的氩气量基本与Ca/K呈正相关关系。120keV氩离子注入多种岩石的饱和剂量为～10〓粒子/cm〓。

A unified strength theory was suggested for the failure criterion of rock. It can take account of the influence of intermediate principal stress on the material strength. The penetration resistance was derived for three different nose shapes: ogival, hemispherical and conical.

采用统一强度理论作为岩石的破坏准则，基于动态空腔膨胀理论研究了弹体侵彻岩石靶时所受的阻力，以及刚性弹体对岩石的侵彻深度，并分析了破坏准则、弹头形状、摩擦系数等因素对侵彻深度的影响，与试验资料进行了比较。

If rock compressibility is calculated by the elastic modulus method, its results are relatively reasonable. But if it is calculated by the Hall Plate empirical formula, the value of rock compressibility is too large. Thai's to say, it overvalues the elastic energy of formation rocks. And the velocity of pressure drawdown of the gas reservoir numerical simulation is caused to be too slow.

由Hall图版经验公式法计算得到的岩石压缩系数偏大，即对地层岩石的弹性能量估计偏大，从而导致气藏数值模拟计算的压降速度偏慢；而采用弹性模量法计算岩石压缩系数，其结果相对较为合理。

Rock is the most basic component of all kind of geological unities and geological bodies.

岩石是各种地质单元、地质体的最基本组成单元，不同岩石代表了不同的地质成因，呈现出相互各异的地貌特点，岩石的变形、变位构成了千。。。

It was found out that the automation level of the drill and driver's operation level are also key factors which affect the drilling process.

本文通过对岩石的可钻性和钻进参数进行的分析研究，用已知岩性与未知岩性进行比较，能够得到相对的岩石特性，从而达到识别岩石性质的目的。

Rheological characteristic is one of the most important mechanical characteristics of rock. It controls the creep deformation.

岩石的流变特性是年岩石重要的力学特性之一，它控制着岩石的蠕变参数。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。