结论64层螺旋ct冠状动脉成像质量受到患者心率、心率波动幅度、呼吸运动伪影及重建时相的影响。
Conclusion Image quality of 64-slice ct coronary angiography affected by the patient's heart rate, fluctuation of heart rate, breathing artifact and reconstruction phase.
本文构造的遗传节约混合算法是一个两层的伪并行搜索结构，充分利用了不同的领域搜索方法。
Genetic-saving hybrid algorithm constructed in this paper is a double -deck pseudo-parallel structure. It makes the best of search methods in different fields.
远离大海与微风的外部世界，所有场馆里都有不同的伪木质压层、带花纹的深色地毯、黄铜围栏和花哨的灯具。
Divorced from the watery, breezy world outside, each venue offered variations of faux wood-grain laminates; dark, patterned carpets; brass railings and flamboyant light fixtures.
结论：16层螺旋ct冠状动脉成像可用于无创性诊断冠状动脉中高度狭窄，局限性伪影的影响不可避免。
Conclusion: 16-slice spiral ct could be used in noninvasive assessment of significant coronary artery stenoses with high accuracy. The limit was unavoidable artifacts.
定义了差分GPS（DGPS）的对流层伪距残差的概念，并建立了数学模型。 用计算机对DGPS的对流层伪距残差进行仿真。
Then, the troposphere pseudo-range remaining error (TDRE) of differential GPS (DGPS) is defined, its mathematical model is constructed, and the computer simulation of TDRE of DGPS is carried out.
基于输出层函数为线性函数的三层前馈神经网络，结合自适应步长和动量解耦的伪牛顿算法及迭代最小二乘法导出了一种混合算法。
On the basis of both adaptive BP algorithm and Newtons method, Quasi Newton algorithm with adaptive decoupled step and momentum (QNADSM) for feed-forward neural networks is derived.
伪随机三频波激电法能够计算三个幅频率和三个相对相位差，相对相位差能够很大程度上区分金属矿勘探中的碳质层。
The three breadth frequencies and three relative phase differences can be measured with the pseudo-random tripe-frequency IP method.
目的：探讨16层螺旋ct冠状动脉造影伪影表现和成因，提高冠状动脉ct血管造影质量和诊断准确性。
Purpose: To study the manifestation and cause of artifacts in coronary angiography obtained by 16-slice spiral ct for improving the quality and diagnostic accuracy of coronary angiography in ct.
此外，在伪谱法中引入匹配层边界条件后，只需对空间做一维傅里叶变换，大大提高了伪谱法的计算效率。
With the matched layer boundary conditions being introduced, only the 1-D Fourier transform in space is needed for the PS method, greatly improving the computational efficiency.
大功率二次风喷涂的锌铝伪合金耐腐蚀层在盐雾试验中能够达到16 000小时长效保护。
The Zn-Al pseudo-alloy anticorrosion layer of high-power twice breezes spraying in the salt fog test can be achieved a long-term effect protection about 16 000 hours.
再根据属性值从底层指标开始，依次逐层计算出叶及各枝节点的得分值，从而计算出评估的最后得分值，由此完成计算机伪码算法。
Then, according to attribute value from the bottom index, the scores of leaves and nodes were calculated to adopt the last evaluation score. At last, the fake code algorithm of computer w…
再根据属性值从底层指标开始，依次逐层计算出叶及各枝节点的得分值，从而计算出评估的最后得分值，由此完成计算机伪码算法。
Then, according to attribute value from the bottom index, the scores of leaves and nodes were calculated to adopt the last evaluation score. At last, the fake code algorithm of computer w…
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