quaternary economic sector 第四產(chǎn)業(yè)quaternary ammonium salt [有化] 季銨鹽quaternary ammonium compound [有化] 季銨化合物quaternary ammonium 季銨;四級(jí)銨quaternary (adj.) quaternary adj.第四紀(jì)的;四的;四進(jìn)制的n.四;四進(jìn)制;第四紀(jì)quaternaries adj.第四紀(jì)的;四的;四進(jìn)制的n.四;四進(jìn)制;第四紀(jì)quatern n.四quater (拉)四倍quatemion-moment 四元數(shù)矩quat n.皮疹quassin n.苦木素quassia n.苦木科植物;由其采取之苦味液quassation 壓碎, 破碎quass quasistable adj.似穩(wěn)定的(準(zhǔn)穩(wěn)態(tài)的)quasiretail 準(zhǔn)零售quasipeak n.準(zhǔn)峰值quasinorm n.擬范數(shù)quasimodo (n.)