目的探讨手推法对肝脏磁共振动态增强效果的影响。
Objective To evaluate the hepatic MRI dynamic contrast-enhanced effect with the hand bolus injection method.
目的评价磁共振动态增强扫描诊断垂体微腺瘤的价值。
Objective To evaluate the value of dynamic contrast enhancement MRI in the diagnosis of pituitary micro-adenomas.
关于碳纳米管的声子谱及振动态密度的计算方法有好几种。
There was several kinds of methods to calculate carbon nanotube's phonon spectrum and the vibrate density of states.
几乎对所有初始振动态,得到的总衰变宽度比线宽测量外推数据低约30%。
Nearly all of the computed decay widths are consistently underestimated by about 30% than those extrapolated from linewidth measurements.
本文利用代数方法研究了分子高激发振动态,尤其是过渡态和解离态的动力学。
We employ the algebraic method to study the molecular highly excited vibration, especially the dynamics of dissociation and transition states.
结论磁共振动态增强扫描能明显提高垂体微腺瘤的检出率,对垂体微腺瘤的诊断有重要价值。
Conclusions Dynamic enhanced MRI can increase the diagnostic accuracy of pituitary micro-adenoma. It has great value for the diagnosis of pituitary micro-adenoma.
适当选择调制振幅,可把离子制备在最佳压缩振动态上,并且它们的产生伴随着自发辐射的相消。
Choosing the appropriate modulating amplitude, we can produce the best squeezed vibrational state of the ion and find that its generation is companied by cancellation of the emitted fluorescence.
本文针对MG 1432 B模拟实际工况进行了非接触式单点相对激振和多点拾振动态测试的研究。
In this paper, in accordance with MG1432B simulated practical work, the research of the dynamic test is mede, in which non-contacted single point excites vibration and more points collect signal.
结论:肝细胞癌的磁共振动态增强曲线和对比增强率能够反映肿瘤微血管形成程度,从而有助于判断病人的预后。
Conclusion: The MR dynamic curves and contrast enhancement ratio may prove useful in estimating angiogenic activity and indicating prognosis in HCCs.
由于分子的高激发振动态具有很强的模间非线性偶合以及能量的传递,传统的动力学方法似乎很难有效地用来研究其性质。
The system is considered as classical based on the fact that the highly excited vibration is of high energy and approaches the classical realm.
在单一曝光中,相机的意外抖动被称为相机振动,它会带来动态方向上的模糊。
Accidental movement of the camera during an exposure is called camera shake and has the effect of smearing the image in the direction of movement.
为判断半刚性基层振动压实能否造成下承层的早期破坏,对半刚性基层在移动—振动压实荷载作用下的下承层动态应力响应进行分析。
The dynamic stress response of the lower course by moving-vibrating compaction on semi-rigid base was analyzed to judge whether it caused early wreckage to the lower course.
用于涡轮机叶片在动态状态下对其振动频率、动应力和温度进行遥测。
It is for telemetering the vibration frequency, dynamic stress and temperature of turbine blades under dynamic state.
水电机组在实际运行过程中所承受的各类动载荷是进行振动分析和动态设计的基础数据。
The dynamic load on powerhouse when operating is the basic data of dynamic design and vibration analysis.
车床的动态特性主要是指车床抵抗振动的能力,包括其抗振性和稳定性。
Dynamic performance of lathe mainly refers to the capacity of lathe's resistance to vibration, including resistance to vibration and stability.
本文概要论述了双轴惯性振动机构,两自由度动态模型的分析和优化方法。
After a brief description of the inertia vibrating mechanism with twin axles, the analysis and optimization method of dynamic model with two degrees freedom.
提出了两者对齿轮传动动态特性中振动、噪音、可靠性、传动效率、寿命等的影响。
The gear dynamic characteristic with vibration, noise, reliability transmission efficiency and used life was effected by gear dynamic and static precision.
研究了振动攻丝动态攻丝扭矩与丝锥磨损的关系;
The relationship between the dynamic tapping torque and the tap wear is studied through the experiments.
对于大多数敞篷车,扭转刚性对减小风挡振动和保持动态稳定性特别重要。
Torsional rigidity is vital to minimise the scuttle shake associated with most convertible cars and to help maintain the car's dynamic composure.
振动拌和过程是复杂的动态流变过程。
It is the complicated dynamic rheology course to mix and stir the course in vibration.
对行波超声电机的控制模型进行了研究,并建立了等效动态振动模型。
The mathematics model of travelling-wave ultrasonic motors is studied in this paper and the equivalent vibrating model is built.
利用基于滤波X最小均方值算法的前馈型自适应控制系统,对汽车座椅振动实施主动控制,以改善座椅的动态舒适性。
An adaptive controller which contains a filtered-x least mean squares algorithm(FXLMS) was applied to complete the active vibration control of a vehicle seat.
这种误差对传动系统的精度与动态特性(特别是振动与噪声)有直接的影响。
It directly influences on the accuracy of drive systems and dynamic characteristics, especially vibration and noise.
结构系统的振动控制是改善航天器动态特性的重要途径。
Structure vibration control is of great importance for the melioration of spacecraft dynamic property.
对振动系统动态特性进行了研究。
Researching into the dynamic characteristic of vibration system.
振动系统的动态特性主要取决于其模态参数。
The dynamic characteristics of vibration system depend mainly on its modality parameters.
采用动态刚度阵法计算船体总振动的固有频率。
Dynamic Stiffness Matrix Method is applied to compute vibration of ship hull.
在开发设计的振动诱导动态全硫化实验装置上,对热塑性硫化橡胶(TPV)的性能与微观形态进行了测试与分析。
The experimental equipment of vibrational induction for dynamically full vulcanization was designed and used to measure and analyze the property and micromorphology of thermoplastic vulcanite (TPV).
结构物对爆破振动荷载的动态响应,是其对于不同优势频率的细节信号的不同的动态响应的叠加的结果。
Under blasting vibrating load, the dynamic response of the structure results from the superposed results of its dynamic response to various dominating frequency detail signals.
采用数值模拟方法,对新浇混凝土灌注桩在爆破振动作用下的动态响应进行了分析。
The dynamic response of fresh concrete filling pile under blasting load is studied by numerical simulation in this paper.
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