thick and thin paper 厚纸和薄纸
There is no universal analytic formula in theory. This paper offers the universal analytic formula for thin and thick plates with the method of edge integration.
在理论上没有一般性的解析表达式，无论是薄板还是厚板，本文由边界积分法给出了一般封闭解析解的表达式。
An ACN element stiffness matrix is proposed in the paper, which can be used in the analysis of both thick and thin plates without shear locking.
本文给出一个可以通用于薄板和厚板结构分析且不会出现剪切自锁的ACM单元刚度矩阵。
This paper selects four mulching film including of violet, white, blue thin film and blue thick film to compare their effect of cover cultivate.
选用紫色、白色、 蓝色薄膜及 蓝色厚膜 4种地膜对两葡萄品种里扎马特、凯然诺尔进行覆盖栽培。
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