Also, the subject which is a concentratedcouple acting on an arbitrary point and in any direction of a plate with four built-in edges, is discussed in this paper.
文中还讨论了在任意点任意方向受集中力偶作用的四边固定板问题。
2
We’re using a concentrated bottle of Shaklee’s H2, and I think it’s going to be a couple of years before I need to buy more. (I also use it as a glass cleaner.)