质心

In Brunn-Minkowski-Firey theory, we establish two extremum properties of the new ellipsoid; Then we generalize Petty\'s affine projection inequality and monotonicity results related to affine surface area to L_p—affine surface area; We establish the Brunn-Minkowski type inequalities for the volume of the L_p centroid body and its polar body with respect to the normalized L_p radial addition. At last, we introduce the minimal L_p—mean width of a convex body and generalize the minimal mean width to the Brunn-Minkowski-Firey theory.

在L_p-Brunn-Minkowski理论中，我们首先给出了两个关于新椭球的极值性质；然后研究了L_p仿射表面积，将Petty仿射投影不等式和Winterniz单调性问题推广到L_p仿射表面积；建立了L_p质心体和其极体的Brunn-Minkowski型不等式；研究了凸体的最小L_p平均宽度，给(来源：3bABbeC论文网www.abclunwen.com)出凸体K具有最小L_p平均宽度的充分必要条件，最后给出了凸体L_p平均宽度位置的稳定性。

Convex body; star body; polar body; inequality; extremum; i—th width integral of convex body; mixed width-integral of convex bodies; mixed chord-integrals of star bodies; affine surface area; mixed affine surface area; mixed projection body; mixed body; L_p-projection body; L_p-centroid body

基础科学，数学，几何、拓扑凸体；星体；极体；不等式；极值；凸体i-次宽度积分；凸体混合宽度积分；星体混合弦长积分；仿射表面积；混合仿射表面积；混合投影体；混合体； L_p-投影体； L_p-质心体

The direct yaw moment control designed by feed forward law is suggested to minimize the side slip angle at the center of the gravity as the possible substitute for 4WS.

提出了用前轮转角前馈规律设计的零化质心处侧偏角的横摆力矩模型。

The phenomena which is involved is called "instability of the rotor relative to the angle of attack" and is well

这是问题的关键点，因为很多主要问题的发生都是与旋翼拉力线和质心的水平相对位置有关

When moving the ion from the node of the standing-wave laser to the antinode, the frequency of the vibration becomes less, the longer time of the disentanglement between the internal and external degrees of freedom.

当离子质心的位置从驻波激光场的波节移向波腹，囚禁离子熵演化的振荡频率变小，离子与声子自由度退纠缠的时间变长。

A method of moment features testing components' states is put forward to solve this problem.First the components' barycentric coordinates and second-order centered moments are calculated.Then the inclined angles are obtained,on the basis of which the inclined components can be rectified.

针对这一问题，提出了一种矩特征检测构件状态的方法，该方法首先计算出图像中构件的质心坐标和二阶中心矩，然后求出构件的倾斜角度，根据倾斜角对处于倾斜状态的构件进行校正。

The Bernese 5.0 software is used to compute the precise orbits of the FORMOSAT-3 and GRACE satellites using the kinematic and reduced-dynamic methods based on zero-differenced GPS phases from these two satellites missions. This study concentrates on the effects of satellite attitude, GPS antenna phase center variation and center of mass.

本论文针对福尔摩沙卫星三号及GRACE卫星姿态、相位及质心影响精密定轨问题分别进行探讨，采用GPS相位观测资料以Bernese 5.0软体进行零次差减动力法及动态法计算轨道。

To fulfill a TV guidance system task of fast recognizing and tracking missile target from sequential images including multiple interferences,a fast segmentation and target characteristic extraction algorithm of sequential images based on binary image index map was proposed.After the sequential images were processed to binary images,a Field Programmable Gate Array was used to scan the binary image once and an index map was built,and then Digital Signal Processing was used to scan the index map once.

针对电视制导系统需从包含多个干扰目标的序列图像中快速识别和跟踪导弹目标的要求，提出了一种基于二值图像索引图的序列图像快速分割及目标特征提取算法，在序列图像二值化后，只需由FPGA对其遍历一次就可得到一张含有目标信息的索引图表，再由DSP对该索引图表边遍历边计算就可得到图像所含目标的数量、面积、质心坐标、二阶矩不变量等特征。

The power required during a turn can be expressed by [6.6] where V is the speed of the center of gravity of the vehicle during a turn, is the frictional torque of the brake in the steering system, and is the relative angular velocity of the frictional elements in the brack.

所需功率在一转，可以表达[ 6.6 ] 如果v是速度，质心的车辆在转弯，是摩擦力矩制动，在助力转向系统，是相对角速度的摩擦因素在brack 。

There are assumptions about aircraft's ground motion; one of those widely used is "the center of simultaneous turning of the airframe is the same as the center of curvature of the mass center's track".

对飞机的地面运动一直沿用瞬时转动中心等价于质心轨迹的曲率中心的假设。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。