centroid 是什么意思

	n. [物]矩心；质心，质量中心(＝centre of mass) 形心曲线；心迹线。

the center of mass of an object of uniform density

	1.	In the fully plastic condition, the neutral axis does not necessarily pass through the centroid . 在全塑状态下，中性轴不一定需要通过形心。
	2.	If this load centroid is behind the elastic axis of the wing structure, then a nose-down twist of the main wing surface results . 如果该载荷重心在机翼结构弹性轴之后，则引起主机翼表面前端向下的扭转。
	3.	At supersonic speeds the control load acts mainly on the deflected surface itself, and hence has its centroid even farther to the rear . 超音速时操纵载荷主要作用在偏转面本身上，因此它的作用中心甚至更加靠后。
	4.	The study on the centroid of the lattice point in the plane 平面格点形心问题研究
	5.	Centroid position of focal spot of laser beam with aberration 畸变光束的焦斑质心位置
	6.	Doppler centroid estimation of sas based on radon transform 变换的合成孔径声纳多普勒中心估计
	7.	Correction of torpedo ' s centroid eccentricity with counterweight technology 鱼雷质心配重纠偏技术的实现
	8.	Probing into centroid shift of governmental function under globalizing 全球化趋势下政府职能重心转移探析
	9.	Centroid of asymptotes 渐近线的形心
	10.	Centroid of volume 体积矩心

centroid是什么意思