Detailed analysis the source of detection errors and the method of improving precision by using the measuring model of phase difference method, and optimum designed the mechanical construction system.3.
2:利用建立的超声波相差法风速测量模型详细分析了测量误差来源和精度提高途径,优化设计了系统机械结构。
参考来源 - 超声波隧道风速测量技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
So this technique has high sensitivity which phase difference method has and is hardly affected by the variation of the sound speed of the fluid, just as frequency difference method is .
因而该方法具备了相差法检测灵敏度高和频差法受被测流体声速变化影响小的特点。
Dendrite growth has been simulated with the phase field method and finite difference schemes on a two dimensional rectangular domain with a uniform square mesh.
采用相场模型和有限差分方法，模拟了过冷纯金属熔体的枝晶生长，计算区域为二维正方形均匀网格。
A novel method of phase difference estimation under Gaussian noise is proposed to improve the precision of Coriolis mass flowmeter.
为提高其精度，提出了一种高斯噪声背景下的科氏质量流量计相位差估计新方法。
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