Mafic igneous rock, a widely distributed and typical mantle-derived rock, has become a major research source for revealing possible mechanisms for the chemical evolution of the mantle.
镁铁质火成岩作为分布最为广泛的典型幔源岩石，已成为探索地幔化学性状及示踪岩石圈深部过程的主要研究对象。
These microscopic impurities, derived from rock and from organic material in creatures that once lived on an ancient ocean floor, have undergone an amazing journey.
这些来源于岩石和曾经生活在远古海洋板块的的生物中的有机物的微观杂质，已经经历了一个令人惊异的旅程。
The domestic pigeon, derived from the rock pigeon, is the world's oldest domesticated bird.
家鸽是从野鸽分化而来的，是世界上最早被人类驯化的鸟类。
Derived from folk rock, it USES acoustic instruments and puts more emphasis on melody and harmony.
源自摇滚民谣的慢摇滚使用原声乐器，更强调旋律与和声。
On the basis of theoretical linear model, the paper studies the influence of input flow on operating parameters of shock mechanism for hydraulic rock drill, and a series of brief formulae are derived.
在理想线性模型的基础上，研究了输入流量对液压凿岩机冲击机构工作参数的影响，得到了一组简明公式。
Heavy Metal also derived from the shatteringly loud blues-rock and psychedelia of the late '60s.
重金属也起源于60年代后期喧哗嘈杂的布鲁斯摇滚和迷幻乐。
Phosphatic fertilzers are all derived from calcium salts of phosphoric acid and these are found as raw bones apatite and phosphate rock.
无论什么磷肥，全都来自含钙的磷酸盐。生骨粉，磷灰粉，磷灰石含有大量的这种盐类。
Describing rock fracture as a non-equilibrium process in which micro-cracks nucleate, grow and propagate, a set of differential equation describing this evolution process is derived.
认为岩石断裂是岩石内部微裂缝成核、形成和传播的非平衡过程，导出了描述这个过程的微分方程。
Look at the rock under your foot. This light red colored rock is called granite which is derived from the crystallization of molten magma.
你脚下的岩石，这种浅红色的岩石叫做花岗岩，它是由熔融的岩浆冷却结晶而形成。
Based on the characteristic of rock strength, an expression of happening probability of influencing structural earthquake was derived.
依据岩石强度的分形特性，导出了影响构造地震发生概率的表达式。
On the basis of rock mass mechanics model of cracking plate structure, it derived the calculation equation for the equivalent exposed area of mine stope.
它以板裂结构的岩体力学模型为基础，推导出了采场当量暴露面积的计算公式。
Based on plastoelasticity mechanics and surrounding rock-supporting principle, the stability of shaft was analyzed, and calculation formula of stress, displacement and support thickness were derived.
根据弹塑性力学及围岩-支护相互作用原理，分析了竖井稳定性，推导了竖井围岩与支护的应力、位移以及支护厚度的计算公式。
Correlation between oil and source rock shows that the Ordovician reservoir oil of Tazhong 45 well is derived mainly from Cambrian source rock.
油、烃源岩对比结果表明，塔中45井奥陶系原油主要来自寒武系。
According to the study of source of minerals etc. the ore-bearing minerals are mainly derived from the laterite weathering of carbonate rock.
根据成矿物质来源等方面研究，认为含矿岩系的物源主要来自碳酸盐岩的红土风化壳。
The mathematical models of these 3 kinds of hydrocarbon-expulsion geologic models are derived from the concept of rhythmic layering and source rock heterogeneity.
将烃源岩非均质性的概念引入到生、排烃数值模拟过程中，利用韵律层的概念，推导出这3种排烃地质模型的数学模型。
For this purpose, a formula for the accurate calculation of the shortest net rock pillar between two roadways was derived, which thus solves this problem.
为此推导出一个能准确计算两巷道之间最短净岩柱的公式来解决这一问题。
The relationship between the rock impedance and the measured impedance is derived. The validity and feasibilty of the correction method isp…
从理论上推导出了岩心复阻抗与测量阻抗之间的关系。
This type of oil is derived from the shallowly buried, immature or lowly mature source rock of Duhongmu Formation I.
这类原油属于原生低成熟特稠油，油源为都一段未熟、低成熟烃源岩。
In the paper, on the basis of two rupture modes-fracture propagation and shearing slide, the strength of jointed rock is derived by use of statistical fracture mechanics.
本文基于岩体节理断裂扩展和剪切滑移两种失稳破坏机制，运用统计断裂力学方法建立了两种破坏方式下节理岩体强度的理论表达式。
With the measured P and S wave velocities and log-derived densities of the same interval, rock mechanical parameters of this pre-borehole are roughly calculated.
提取出其中的纵波、横波速度信息，并与实验室岩心声波测量结果和测井结果进行了对比。
The coinage of Xiaofeng Zhu's Cloudery is derived from the word rockery which refers to traditional Chinese rock gardens.
祝晓峰的“假云”一词由假山而来，后者指传统中国园林的假山石。
Some phosphate is derived from the weathering of rock;
某种磷酸根来自岩石风化；
The carbon isotope correlation between ethane in the natural gases and source rock kerogens shows that the gases in the reservoirs were mainly derived from Permian strata.
天然气乙烷碳同位素与各层系烃源岩干酪根碳同位素值对比结果揭示普光气田天然气主要来自二叠系烃源层。
The carbon isotope correlation between ethane in the natural gases and source rock kerogens shows that the gases in the reservoirs were mainly derived from Permian strata.
天然气乙烷碳同位素与各层系烃源岩干酪根碳同位素值对比结果揭示普光气田天然气主要来自二叠系烃源层。
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