查询词典 angular derivative

The necessary conditions of the formation of halo are: weekly bound, low orbit angular momentum and short distance interaction.

形成晕结构的必要条件是：弱束缚、低轨道角动量和短程相互作用。

Considering features' angular distance between background and target, feature differences of local area are computed and targets can be detected by these differences.

由于背景具有与目标不同的特征，利用角度度量准则来度量这些特征之间的差异，计算局部区域的特征差异，从而实现红外图像弱小目标的检测。

In the passive estimation of mobile target track, the stationary ground platform only provides angular information but no distance information.

在地面固定单站对机动目标的无源轨迹预测中，地面固定单站仅提供目标方位角和高低角信息，而没有提供目标距离信息。

Astronomy The angular distance of a celestial body below the horizon.

俯角：天体在地平线下的角距离

The angular distance of a celestial body north or south of the ecliptic .

黄道面与赤道面的夹角是黄道的倾角。

The angular distance of a celestial body below the horizon.

涂底料，底漆涂在某一表面上的底漆或底料

An instrument for measuring the angular distance between celestial objects; resembles an octant.

测量两个天体之间的角距离；类似于八分仪。

A unit of angular distance equal to one thousandth of a milliradian.

角距离单位等于毫弧。

Angular distance distrubution-based search-less algorithm for star list.

基于角距分布的星表快速查找算法。

A new color difference formula in RGB color space is achieved by dynamically adjusting the vector distance and angular distance between a pair of RGB colors.

提出了一种新的基于RGB颜色模型内颜色间矢量空间距离和矢量角度的色差公式。

Newly designed quick-refill fuel tank cap and dust proof radio box back-up their impressive form by also contributing to the low center of gravity.

新设计的快速填充油箱盖和防尘电台方块备份其令人印象深刻的形式也有助于低重心。

The book is a spin-off from his master's thesis.

这本书是他的硕士论文的派生作品。