abbr. 
西格玛设计（Design for Six Sigma）
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coproduct, co-product, coproduction, co-production, coprogen, coprogenic, copro-humus, coprolagnia, coprolalia, coprolaliac,
相似单词
DFRA, D-fructopyranose, DFS, DF-space, DFSR, DFSS, DFStn, DFSU, dft, DFW,