An increase in the accuracy of facial fracture diagnosis has been appreciated secondary to the advent of three-dimensional ct scans.
三维ct扫描技术的出现才使脸部骨折的精确诊断得以实现。
Objective: To assess the accuracy and reproducibility of real-time three-dimensional echocardiography (RT-3DE) for measuring the volumes of models with different shape and size ire vitro.
目的：评价实时三维超声心动图(RT - 3de)技术在不同形状体外模型容积测量中的准确性和重复性。
The mechanical structure, principles and ways of control, and the working accuracy of three dimensional WEDM machine are discussed.
探讨了斜度线切割机床的机械结构、控制原理和方式以及精度误差。
A mathematical model on the influence of three-dimensional locating upon machining accuracy is established.
建立了三维定位误差影响加工精度的数学模型。
The three-dimensional numerical model of the vertical borehole heat exchanger of ground source heat pump was established and the accuracy of numerical model was verified in this paper.
以地源热泵垂直埋管换热器为研究对象，建立地源热泵垂直埋管换热器的三维数值模型，通过实验对数值模型进行验证。
Objective To evaluate the accuracy and clinical value of transthoracic three-dimensional echocardiographic (3DE) quantitative analysis in ventricular septal defect (VSD) of conotruncal defects (CTD).
目的探讨三维超声心动图（3DE）在圆锥动脉干畸形（CTD）室间隔缺损（VSD）定量研究中的准确性及其临床意义。
AIM: To explore the accuracy of three dimensional color Doppler ultrasonography in evaluating the extent of carotid artery stenosis.
目的：探讨利用三维彩色多普勒超声成像评价颈动脉狭窄程度的准确性。
Objective to discuss the accuracy of 3dss three-dimensional scanning system, which was used to reconstruct the 3d digital model of unilateral orbital defect patients.
目的：探讨结构光三维扫描系统3dss在重建单侧眶缺损患者面部三维数字化模型的准确性。
The lapping amount of bead is critical not only for the trouble-free operation of three-dimensional welding, but also for the forming accuracy.
焊道搭接量对保证三维堆焊成形过程的顺利进行以及成形件的精度都有较为重要的影响。
Three-dimensional power Doppler ultrasound improves the diagnostic accuracy for ovarian cancer prediction.
三维能量多普勒超声的应用提高了卵巢癌诊断的准确度。
The computer vision measuring technology based on the rectangular grid laser mark is a three-dimensional coordinate measuring technology with high accuracy.
基于激光网格标记的视觉测量技术是一种高精度的三维坐标测量技术。
Objective To evaluate the diagnostic accuracy and clinical values of three-dimensional ct in facial fractures.
目的探讨螺旋CT三维重建在颌面部骨折诊断中的准确性和临床应用价值。
Objective To assess the accuracy of real-time three-dimensional echocardiography (RT-3DE) for measuring left ventricular volume and ejection fraction.
目的评价实时三维超声心动图(RT 3de)测量左心室容量与射血分数的准确性。
Objective to examine the accuracy of multi-slice ct (MSCT) three dimensional (3d) volume measurement of tumors and livers in hepatocellular carcinoma cases by using immersion method as the standard.
目的以水浸法为标准检验原发性肝癌肿块和肝脏螺旋CT (MSCT)三维、(3d)体积测量方法的精确性。
Objective To evaluate the feasibility and accuracy of real-time three-dimensional echocardiography (RT-3DE) full volume and X-plane for quantifying the volume of left ventricular (LV) models.
目的探讨实时三维超声心动图（RT-3DE）全容积成像及双平面法测量左心室容积的可行性和准确性。
Aimed at surveying method of three-dimensional traverse, this paper makes research on accuracy matching of three-dimensional traverse by Electrofiic total station.
针对全站仪三维导线的作业方法，讨论了它的精度匹配问题，得出等级平面导线与对应的等级高程导线相匹配的结论。
Objective To evaluate the clinical value and diagnostic accuracy of spiral CT three dimensional (3D) reconstruction for detecting the maxillofacial trauma.
目的探讨螺旋CT三维重建对颌面部外伤的诊断准确性。
Objective To evaluate initially the feasibility and accuracy of real-time three-dimensional echocardiography (3-DE) for quantifying the right ventricular wall mass in an in vitro experimental study.
目的初步评价实时三维超声心动图（3-DE）估测右心室室壁质量的可行性和准确性。
The experiment results indicate the retrieval accuracy of the three-dimensional model is improved.
实验结果表明该算法提高了三维模型的检索准确性。
It guides the formation of the three-dimensional numerical bender's data and supplies a algorithm of checking the accuracy of the drawing through observation the three-dimensional virtual image.
提供了一种通过生成立体的三维虚拟图像来检查设计图纸准确性的计算方法。
Currently, only direct detection Doppler lidar is able to directly measure three-dimensional wind field with high accuracy, high temporal and spatial resolution in the global region.
目前，只有直接探测多普勒测风激光雷达能够对全球范围的三维风场进行高精度、高时空分辨率的探测。
Objective To test the feasibility and accuracy of using real-time three-dimensional echocardiography(RT-3DE) to detect ischemia during adenosine-induced stress.
目的探讨实时三维超声心动图在腺苷负荷试验中对心肌缺血检测的可行性及诊断价值。
Three dimensional Navier-Stokes equations were solved. The accuracy was improved with a high-resolution scheme. And the convergence was speeded up by the use of LU-SGS implicit method.
求解全三维N-S方程，通过高分辨率格式提高跨音速流场计算的准确性，利用 LU-SGS隐式解法加快计算收敛速度。
RESULTS and CONCLUSION: a realistic appearance and calculation accuracy three-dimensional finite element model of osteonecrosis of the femoral head was established.
结果与结论：快捷建立了外形逼真、计算精确的股骨头坏死三维有限元模型。
Objective: To evaluate the accuracy of two-dimensional and three-dimensional (3d) color Doppler echocardiography in cardiac stroke volume quantification.
目的：比较二维超声及三维彩色多普勒超声在心搏出量计算方面的准确性。
Objective: To evaluate the accuracy of two-dimensional and three-dimensional (3d) color Doppler echocardiography in cardiac stroke volume quantification.
目的：比较二维超声及三维彩色多普勒超声在心搏出量计算方面的准确性。
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