弱: weak; feeble级: level; rank; grade性: nature; character; dispositi ...区: H region; H级性: polarity弱级数: minorant for series性区: genital area阶级性: class nature脆性区: brittle zone弹性区: elastic range; elastic region; elastic zone活性区: active region; active section; active zone chain-reacting region; core region; fissile region; reacting core; reacting region属性区: attribute area塑性区: plastic range; plastic region; plastic zone线性区: linear region; linear zone; linearization range; range of linearity; zone of linearity延性区: thumb nail阳性区: positive area粘性区: sticky region中性区: neutral region; neutral zone; overlap超级性能: superperfformance; superperformance初级性比: primary sex ratio初级性差异: primary sex difference初级性器官: primary sex organ初级性索: primary sex cord初级性细胞: primary sex cells初级性征: primary sex character; primary sexual character