If we have a solid cylinder, then the moment of inertia about this axis Q through the center of mass, which I've called Q, equals 1/2 MR squared.
假如有一个实心圆柱体，轴心的时间惯量,通过这个物质的中心，等于1/2，MR的平方。
2
First of all, for strength and stability, mainly acylinder, cover the wall, the water pressure check and impeller stress test, the axisof strength checking.
首先进行强度和稳定性计算，主要进行了筒体、端盖的壁厚计算、水压试验应力校核以及叶轮、轴的强度校核。
3
Let's say I have acylinderof radius a centered on the z-axis.