查询词典 ellipsoid

To study the effect of gravity eccentricity on the ranges,the expression of gravity was educed using spherical harmonic function when the earth is considered as an normal ellipsoid or sphere.

为了研究地球的重力偏心对射程的影响，用球谐函数展开法推导了地球为正常椭球体和圆球体时的重力表达式，对地球的重力偏心进行了计算分析，求出了偏心值。

Stamens (1–)3. Caryopsis usually ellipsoid, hilum short or long-linear.

雄蕊(1-)3。通常的Caryopsis 椭圆体，种脐短或更长线。

We use VC? and SQL Server to develop software for fitting ellipsoid of reflectance indicatrix.

用VC 和SQLServer工具开发软件进行煤反射率光率体椭球拟合。

Uncertain time-delay systems ; invariant ellipsoid set ; model predictive control ; stability

不确定时滞系统；不变椭圆集；预测控制；稳定性

Dual mode predictive control method is proposed for reducing on-line burden. The proposed method applies the ellipsoid invariant set to the terminal set.

该方法将时滞系统的不变椭圆集应用于预测控制的终端约束集，保证了输入受限系统的可行性和稳定性。

When the predictive states are in invariant ellipsoid set, the off-line state-feedback law is adopted. Thus, computational burden is reduced.

最后将时滞系统的滑模面作为预测控制的不变集，扩大了终端约束集，有效缩短了预测时域。

This algorithm was realized by minimizing the invariant ellipsoid of the closed loop system. Some sufficient conditions dependent on the invariant set for the satisfaction of the time domain hard constraints were also derived.

在系统初始状态小于某个界的情况下，将性能输出的能量作为优化的性能指标，通过最小化系统的不变椭圆域来实现系统优化控制，同时得到依赖于该不变域的满足时域硬约束的充分条件。

The proposed method applies the ellipsoid invariant set to the estimated state and state estimation error. The conditions of invariance and feasibility of estimated state, as well as the stability of the closedloop system are given.

该方法采用双模控制策略，将不变椭圆集概念同时应用于观测器的状态方程和误差方程，给出估计状态不变性和控制输入可行性条件并给出了闭环系统的稳定性定理。

Strength of SPBT was numerically explained on the base of Perdersen discharge model of ellipsoid void, and the conclusion was got that the discharge strength of void was an inverse measure of the cosine of oriented angle of void.

本文首次利用Perdersen的棉球气孔放电模型，定量解释了SPBT瓷体局部放电起始场强的大小，并得到瓷体中气孔发生放电的外施场强与此气孔取向角余弦成反比的结论。

This conclusion makes it clear that there is mathematic relationship between parameter ellipsoid and latitudinal density , and we have full reasons to do research on latitudinal density and latitudinal density anomaly.

这样就将不久前提出的"参数椭球"与"纬向密度"联系在了一起，使得水准椭球的纬向密度成为一种数学必然，为研究地球的纬向密度及纬向密度异常找到了充分的理由。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。