propagation的例句大全

Based on gradient descent rule, the BP ( Back Propagation ) algorithm is a local optimization algorithm.

bp 算法基于梯度下降原理,是一种局部寻优算法.

The finite element method was used to calculate elastic wave propagation in the medium.

本文采用有限元素法计算弹性波在介质中的传播.

Standard Methods of Fire Tests for Flame Propagation of Textiles and Films.

s厂房建设和社团的消防安全标准.

The influence of water sprays on gas flame propagation is experimentally studied in the present paper.

本文利用自行设计的传播火焰喷雾抑制实验系统研究了水雾对甲烷火焰传播特性的影响.

Dispersion waveform of travelling wave propagation in three-phase.

行波在三相上传播色散图.

Study on Establishment and Optimization of Tissue Culture in Rapid Propagation System of Zantedeschia Aethiopica and Zantedeschia Hybrid

马蹄莲和彩色马蹄莲快繁体系的构建和优化研究

Establishment of Rapid In-vitro Propagation System of Liriodendron tulipifera

北美鹅掌楸组培快繁技术体系的建立

Study on the Cutting Propagation Technique of Aerospace Sterile Material Sorghum bicolor

航天不育材料高丹草扦插繁殖方法研究

Tissue culture and rapid propagation of malus "snowdrift crab"

“雪球”海棠的组织培养和快速繁殖

Study on the Tissue Culture and Rapid Propagation of Carthamus tinctorius

新疆红花组织培养与快速繁殖的研究

Tissue Culture and Rapid Propagation of Punica granatum

濒危品种软籽石榴的组织培养和快速繁殖

Studies on Tissue Culture and Rapid Propagation of Cherry Tomato

樱桃番茄的组织培养与快速繁殖研究

The study of tissue culture and rapid propagation of cherry tomato

樱桃番茄的组织培养与离体快繁研究

The beam waist width, the waist location in free-space propagation and the M2-factor of EshG beams are also deduced.

得到了复宗量双曲正弦高斯光束在自由空间传输时束腰宽度和位置的解析表达式以及M2因子的表达式。

Theoretical research and experimental results indicate the effectiveness of the proposed algorithm. Fifthly, based on Affinity Propagation clustering and BWP index, an image segmentation algorithm is proposed.

理论研究和实验结果表明了AHBC算法的有效性。（5）基于近邻传播聚类算法和BWP指标，提出了一种灰度图像自动分割算法。

Fatigue Crack Propagation of Steel 980 Welded Joint under Spectrum Load

980钢焊接接头在谱载荷作用下的疲劳裂纹扩展

Review on the research of wave propagation in Biot porous medium

Biot介质中波传播研究述评

Using a complex analytical signal representation, the free-space propagation properties of ultrashort pulsed Bessel-Gauss beams whose waist width is independent of frequency are studied.

使用复解析信号法研究了束宽与频率无关的超短脉冲贝塞尔-高斯光束在自由空间的传输特性。

Using the scalar quantity propagation formula, the numerical calculation had done. The far-field distributions of the Gaussian-Schell model beams with different waist width, correlation length and coherent length were worked out.

利用部分相干光的标量传播公式，对不同束腰宽度、相关长度和相干长度的高斯-谢尔模光束经光栅后的传输特性进行了数值计算，得到了多种情况下光束的远场强度分布。

Based on the theory of the second intensity moment, the analytic expressions of the far-field divergence angle, near-field divergence angle, waist width and beam propagation factor of non-paraxial Lorentz beams are derived, and the transform characteristics are discussed.

基于光强的二阶矩理论，得出了非傍轴洛伦兹光束的远场发散角、近场发散角、束腰宽度以及光束传输因子的解析表达式，讨论了它们的变换规律。