反应层结构严密与渣紧密结合在一起；
The reaction layer has dense structure and can be closely together with the slag.
他的文章写得好，结构严密，风格优美。
His article is a well-written composition with good organization and fine style.
脊椎状构造，结构严密象脊骨结构的环节分割；
The Conformation Theories of Tensility Structures and the Structure Analysis of Flexible Antennae;
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