tetrads四色相(等间隔)配色tetran.脂鲤（南美产的热带鱼）pref.四；四原；四基tetrabromo-methane[化] 四溴甲烷Tetrapyle circularisn.圆四门孔虫tetraphernl pyrazine四苯基吡嗪tetrafluoro compound四氟化合物tetraphernl silicane四苯基硅tetramethyl plumbane四甲基铅tetranydrocannabinal四氢大麻酚Tetraonchus huchonisn.鳇四钩虫tetrahedral symmetry四面体对称性tetrafluorohydrazine四氟肼