阶子式全为零，即矩阵的最高阶非零子式的阶数为r。则称 r displaystyle r SMART Vocabulary: linked text and phrases Classifying and making order alphabetize anti-hierarchical organize arrangement arranger describe macrocosm miscatalog misclassification misclassify miscode mislabel pigeonhole shake someone down phrasal verb small-record type sort some thing out phrasal verb spring-cleanse u... https://ocxhc.com