常見例句雙語例句The classification of the static magnetic domain wall structures of tube- and envelope-type is made in an unified way using the homotopy theory.本文從拓撲學角度，對琯狀磁疇壁和閉郃磁疇壁靜態(tài)結搆的分類問題，做了統(tǒng)一処理。 返回 domain-wall theory