With free edges, preferably with black pigmentation.

具有自由边的最好，黑色色素沉着。

youdao

The analysis of the thick rectangular plates with free edges on elastic foundations has been a topic of interest for a number of researchers for many years.

弹性地基上厚板的分析多年来是研究者感兴趣的一个问题，但是对于四边自由的问题却至今没有解决。

youdao

This paper discusses dynamic response of rectangular plates with free edges on viscoelastic foundation under moving loads and gives an approximate solution.

本文首先研究了粘弹性地基上四边自由矩形板在运动载荷作用下的动态响应问题，得到了问题的近似解答。

youdao

The pieces have free-flowing edges, dovetail joinery, inlaid butterfly-shaped bridges of contrasting wood that stop natural cracks from spreading and at least four coats of a hand-rubbed oil finish.

FORBES: Trees with souls