Based on the gray static model, fracture density expression are worked out, and the calculated conclusion have higher precision.
用灰色静态模型建立起计算裂缝密度的表达式，计算结果精度较高。
The fracture density and their opening status controll the permeability and throughput of volcanic reservoirs and change along with the variation in lithology and lightfaces.
裂缝的密度和开启程度是渗流性和产能主控因素，其密度和充填程度随岩性岩相变化而变化。
Elastic parameter such as impedance, velocity, Poisson ratio etc. and pre-stack amplitude, frequency attributes can be used to quantitatively predict the fracture density and direction.
利用阻抗、速度、泊松比等弹性参数和叠前振幅、频率属性可对裂缝密度和方位进行定量预测。
Then the azimuth of formation fractures is estimated; and with the joint use of zero offset P wave source VSP data, fast and slow shear wave seismograms are obtained to have fracture density.
在获得地下裂隙方位角的同时，结合零偏纵波VSP资料得到快、慢S波记录，进而计算了裂隙密度。
But for some, the decline in density is rapid, as their bones become porous and fracture risk increases.
但是对一部分人来说，他们的骨密度会很快得降低，导致骨骼变得疏松，增加了骨折的风险性。
MIM fabrication is ideal where near-full density, high impact toughness, fracture toughness, and fatigue and corrosion resistance are required.
MIM制造是理想，要求接近全密度、高冲击韧性、高断裂韧性、耐疲劳和耐腐蚀性。
The regional distributions and the development density of fracture are studied by the data such as tectonic curvature, fault data associated with image logging and core description.
利用构造曲率、断层数据结合成像测井、岩心描述等数据，可以对裂缝的区域分布、发育密度等进行研究。
The compacting density, bending strength, fracture toughness and rigidity value of the synthesis can be prepared to be applicable gradient material structure under suitable pressure and temperature.
在适当的压力、温度环境下合成致密度、弯曲强度、断裂韧性、硬度值可满足实际应用背景的梯度夹层。
The fracture strain energy density at the high strain rate is mainly determined by the initial elastic modulus and the unstable strain and affected by the temperature and the strain rate.
在高应变率下，断裂应变能密度主要由初始弹性模量和失稳应变共同决定，受温度效应和应变率效应的综合影响。
The fracture stress of DP microstructure increased with the increase of displacement speed, and the microcrack density increased with the decrease of displacement speed.
双态组织的断裂应力随加载速度的上升而增加，微裂纹面密度随加载速度的增加明显下降；
In the case of the limited level density of the material surface energy, the fracture stress and the calculation formula of the engineering damage were studied.
本文研究考虑损伤时材料的断裂应力，推导出了在表面能密度有限的情况下，损伤断裂应力的计算公式。
Given the modest benefits of calcium supplements on bone density and fracture prevention, a reassessment of the role of calcium supplements in osteoporosis management is warranted, they conclude.
由此，研究人员认为，由于对增加骨质的密度和预防骨折的发生，补钙治疗的作用甚微，所以有必要对骨质疏松患者补钙疗法重新评估。
Introduced in this paper are two fracture critical surfaces of three dimensional mixed mode obtained from the theory of strain energy density factor and the theory of maximum tensile strain.
本文对按应变能密度理论和最大拉应变理论所推导出的两个三维复合型断裂临界曲面作了简要介绍。
The theoretic evidence was provided to forecast a large size tensile fault depending on the density change of small fracture structure.
从而为根据小尺度断裂构造密度的变化预测大型张性断层构造提供了理论依据。
You also may be putting yourself at risk for developing osteoporosis, a disease in which bone density is decreased, leaving your bones vulnerable to fracture (breaking).
你还将自己置于骨质疏松症的风险中。骨质疏松症使你的骨密度降低，你的骨骼将更容易骨折(断裂)。
Their density, hardness, flexural strength and fracture toughness were measured.
测定了密度、硬度、抗弯强度、断裂韧性等性能指标。
In the material with relatively low cross-linking density, extensive fracture process stripe is formed which is induced by the combined stress field near the rubber particles.
在交联密度较低的材料中，在橡胶颗粒附近叠加的应力场诱发下发生纵深度较大的断裂过程。
Shear wave responses to fracture media can serve as a tool to measure directly fracture strike and density.
裂隙介质的横波响应能提供对裂隙走向与密度一种直接测量。
Finest fracture lines such as that in lamellapapyracea of ethmoidale and the density of different soft tissue showedclearly on CT.
指出CT扫描对结构特别细致的骨折线，如纸板骨折影像的最大清晰度和对软组织具有高度的组织密度分辨力。
CONCLUSION: bone fracture story, regular exercise, balance diet, intaking of bean products are main influencing factors for bone density.
结论：影响大学生骨密度的因素有骨折史、定期运动、均衡饮食、豆制品摄取。
Methods of bone mineral density (BMD) measurement have been widely used for the diagnosis of osteoporosis, the predicting fracture risk and monitoring bone changes over time.
目前已有许多骨矿含量测量方法用于骨质疏松的诊断、骨折危险性的预测以及骨矿变化的监测。
It is observed by SEM that glass fiber has smooth surface, low crystallization, high density of fracture and shellfish veins of fracture obviously submits ditch form.
用SEM观察到玻璃纤维的表面光滑、低析晶、断口质密度高、断口贝纹呈明显沟状。
Irregular linear low signal intensity lines were observed on T1-weighted, T2-weighted, proton density, and contrast enhanced images, and these represented the fracture.
不规则线性低信号线观察t1加权，T2加权，质子密度，并增强图像，而这些代表了骨折。
Through the analysis of mechanical properties of the specimens, the relationship between the fracture strength and bulk density was characterized in a linear equation.
通过对试样力学性能的分析可知，推导出了材料断裂强力与体积密度的关系式。
Adding other metals can affect the density, strength, fracture toughness, plastic deformation, electrical conductivity and environmental degradation.
加一些其它金属能影响密度、强度、断裂韧性、塑性变形、导电性以及环境侵蚀。
By maximum tension theory and maximum strain energy density theory in fracture mechanics, created and propagation direction of new artificial fracture are analysized.
分别应用断裂力学中的最大拉应力理论和应变能密度因子理论分析了重复压裂中水力裂缝的初始扩展和延伸方向。
For the green body containing a certain size of SiC powders, the carbon particle should be less than a certain size, or else, the density and fracture strength of RBSC decrease wit...
对于一定粒度的碳化硅粉而言，加入到生坯中碳粉粒度应小于一定尺寸，否则，陶瓷的断裂强度和密度将随碳粉粒度的增大而降低。
Bone mineral density and the incidence of fracture were evaluated.
临床评价指标包括骨矿物质密度和骨折发生率。
Bone mineral density is considered to be the standard measure for the diagnosis of osteoporosis and the assessment of fracture risk.
骨密度被认为是对骨质疏松症的诊断和骨折风险评估的标准措施。
Bone mineral density is considered to be the standard measure for the diagnosis of osteoporosis and the assessment of fracture risk.
骨密度被认为是对骨质疏松症的诊断和骨折风险评估的标准措施。
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