场强

This thesis studies the volcanic tectono-petrofacies, petrology, mineralogy, geochemistry, isotopic chronology, stratum and high-precision SHRIMP zircon U-Pb datings of the Mt.Yandangshan volcano-intrusive complex, and concludes that: Yandangshan volcanic rock units belong to high-K calc-alkaline acid rock associations, mainly ryholitic and trachytic dacitic in composition. They have A/CNK values of 0.9-1.2 (i.e., aluminium saturation and supersaturation), enriched LREE and LILEs and depleted HFSE. Their 8Eu values are 0.11-0.32, indicating a evident fractional evolution of plagioclase crystallization. Their ∑REE varied very limitedly,(87~Sr/(86)Sri ratios and eNd values are 0.7086～0.7095 and -10.20～-9.96 for volcanic rocks, and 0.7087~0.7095 and -7.6～6.92 for the central intrusive facies syenite, which means that all the igneous rocks from Mt. Yandangshan are evolutional products of magmas with the same source, and that they derived mainly from crust, but mixed with mantle components.

本文从火山构造岩相学、岩石学、矿物学、地球化学、同位素年代学、地层学等方面出发，同时结合高精度SHRIMP锆石U-Pb定年，对雁荡山火山岩进行了系统的研究，确定雁荡山火山岩为一套以流纹质和粗面英安质为主体的高钾钙碱性酸性岩石组合，A/CNK值集中在0.9～1.2之间，为铝饱和或铝过饱和类型；富轻稀土元素和大阳离子亲石元素、相对亏损高场强元素：负铕异常明显，δEu值为0.11～0.32，表明岩浆经历了以斜长石为主的强烈结晶分异作用：岩石样品的∑REE变化有限，火山岩样品的~(87Sr/~(86)Sr_i为0.7086～0.7095，εNd为-10.20～-9.96，中央侵入体石英正长岩~(87Sr/~(86)Sr_i为0.7087～0.7095，εNd为-7.6～-6.92，表明它们是同源岩浆分异演化的产物，物质来源主要为陆壳，但有地幔物质参与。

In trace elements, both the dioritic enclaves and hosting granite are enriched in LILEs and HFSEs.

在微量元素方面，包体和寄主花岗岩都富含大离子亲石元素和高场强元素。

Aligned cells are electroporated and subsequently electrofused within high electric field strength.

细胞电融合利用细胞在相对电极之间的介电电泳，诱导细胞按特定方向排列，通过电极间产生的较高场强的电脉冲使相互接触的细胞发生电穿孔，进而发生电融合。

The equilibrium equations describing the motion of the charged-liquid-drops under both the action of atmospheral and electrostatical forces are constructed with the help of C.G.Stokes formula.

并由斯托克斯公式建立了带电液滴所受空气动力与静电场力的平衡方程，由此估算了雷电场强和雷电压的可能值。

By applying FASS for on-line sample concentration, the concentration sensitivity for alkaloids was about three-four orders magnitude higher than hydrodynamic injection.

1首次从理论上研究了场强放大样品堆积中水柱长度与样品进样量之间的关系，推导出了相关的数学模型，并用实验进行了验证

At the same time, with the rapid development of the ultrashort-laser-pulse technology, the focusable intensity of 10〓W/cm〓 can be realized on a compact table-top laser system, which can support the electric field that is much higher than that in H atom.

同时，随着超短超强激光技术的飞速发展，目前在小型化台式激光系统上，可聚焦功率密度已经达到了～10〓W/cm〓的量级，在这种功率密度下，激光场强度已经远远超过氢原子的内部库仑场强，激光与物质的相互作用已经进入极端非线性的领域。

Objective to evaluate the diagnostic value of dedicated extremity MR system for meniscal tears.

摘 要 目的探讨低场强四肢专用MR对膝关节半月板撕裂的诊断价值。

It exhibited a well-situated property at morphotropic phase boundary when Zr content is 0.52 and PbO·WO_3 content is 0.5mol%.

研究发现：PbO·WO_3最佳掺杂量为0.5%， Zr含量为52%时材料处于准同型相界内；Pb_(1.05)Zr_(0.52Ti_(0.48)O_3- 0.5mol%(5PbO·WO_3)压电陶瓷在1100℃保温时间为2小时条件下烧结而成，在120℃硅油中，2500V/mm场强下持续极化30分钟，样品达最佳性能。

Objective To evaluate the diagnostic value of low-field MRI and MRU to urinary tract obstruction causcd by urinary carcinoma.

目的 评价低场强磁共振尿路成像与常规磁共振成像结合在泌尿系统肿瘤致尿路梗阻中的诊断价值。

Objective:To analyze the MR findings of neurogenic tumors in spinal canal and compare with meningioma.

目的 ：通过高场强MR对椎管内神经源性肿瘤的表现特征进行分析，并与脊膜瘤的MR表现进行对比研究，以期总结本病的MR表现特征及与脊膜瘤鉴别诊断要点。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。