查询词典 propagation

Somatic embryogenesis is of great value in various sides such as seeding propagation, genetic improvement in trees.

体细胞胚胎发生在林木的繁殖，遗传改良等领域有很大的应用价值。

It indicates that the extinction capability and concentration of bubble solvent can seriously influence the light absorption in some wavebands, bubbles can change the direction of light propagation and reduce the energy density, the transmission intensity and light energy decrease rapidly with the increase of times that the light passes through the bubbles, and bubbles′ floating nature can cause the uncertainty in the emergent ray direction and energy distribution.

结果显示：泡沫溶液的溶质/溶剂的消光能力、浓度等对特定波段光波的吸收产生关键影响；泡沫通过改变光线的传播方向，大大分散出射光线的能量密度；随着光线穿过泡沫液膜界面的次数增多，透射光强迅速衰减，透射能量迅速下降；其漂浮运动还将导致出射光线方向和能量密度分布的不确定性。

To measure the fracture toughness and crack propagation parameters of Q235 steel by fatigue experiment from the point of energy, J integral and the other method are used in measuring.

2从能量的观点出发，通过结构疲劳实验和标准实验，分别用柔度法和J积分测量法测量了Q235钢的断裂韧性值，同时，测量了Q235钢与疲劳裂纹扩展速率相关的两个参数，为基于Q235钢的机械承载结构裂纹的珍断与控制打下了坚实的基础。

Notice that the solvng ELP problem is equivalent to determine a nonlinear mapping,using the nature that BP neural networks has the parallelism and the capabilities of intrinsic nonlinear mapping,we propose a methods of using back error propagation of ne...

而求解线性规划问题的许多有效方法如单纯形法，Karmarkar's方法等却无法直接用于推广的线性规划问题的求解，注意到推广的线性规划问题等价于一个非线性映射，利用BP神经网络的本质并行性和高度非线性处理能力，该文提出了一类求解推广的线性规划问题的BP神经网络方法，它具有网络构建简单，求解精度高，计算量小等优点，实验结果表明其高效性。

This method is derived from the equivalent current measurement transformation of practical measurements from the measuring system and changing corresponding weight coefficient of measurement according to the theory of error propagation.

中文摘要：针对输电系统和配电系统量测类型多样性及传统状态估计算法的不足，讨论并发展了一种基于等效电流量测变换的状态估计及坏数据检测与辨识方法。

The method controls the move of head flying over the disk by firmware and analyzes the width change of projection of the read head, write head and erase band. The experiment shows skew angel can change off-track capability of magnetic head and change the radial error propagation of radial error of self servo-writing.

分离式磁头对硬盘驱动器伺服信息自刻写的影响同样不容忽视，为此提出了一种测定磁头偏移磁道能力大小的方法：通过控制磁头飞行过程，并在飞行过程中动态获取读头信号幅度和比特误差率，从而获取磁头磁道偏移能力。

The convergence of back propagation algorithm is certified. Several forms of error function are proposed.

这种网络在应用上的最大缺点是它的学习收敛速度太慢。

Precision estimation is made more reliable using error calculation by the law of covariance propagation.

采用协方差传播律进行误差计算，使精度评定的结果更加准确。

In addition, based on the improved model and error propagation law, an elevation error estimation formula is derived. It gives the definite effect of the baseline length and angle on the elevation accuracy.

另外，基于改进的高程模型，推导出了高程测量误差传播公式，明确了基线长度和方向对测高精度的影响，对合理选择干涉像对具有指导意义。

Methods The effects of the reading error and the misalignment of the probes on the accuracy of measuring and all the harmonics of roundness were analyzed; The strategy and the algorithm for optimizing the parameters of the measuring system were proposed; The distribution and propagation patterns of the measured errors for all the harmonics of roundness were studied in detail; A software for correcting the errors caused by the measurement error of the angle positions of the probes and the sensitivity difference between three probes was presented.

分析了测头读数及角位置误差对圆度各次谐波及圆周各点测量精度的影响；提出了三点法测量系统的优化策略与算法；研究了三点法测量误差的分布与传递规律；提出了克服测头定位误差以及3个测头的灵敏度不一致影响的软件校正方法。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。