Sentence:  A basic characteristic of compression-loaded square isotropic plates with large <WSD>cut-outs</WSD>, that is somewhat counter-intuitive at first glance, is that under certain circumstances they exhibit higher buckling loads than corresponding plates without <WSD>cut-outs</WSD>. 
Meaning of the word marked with <WSD> tags:  A hole or space produced when something is removed by cutting. "Also attributive."