常見(jiàn)例句雙語(yǔ)例句The average chromosome number per cell decreased by 4 9. Pollen irradiation enhanced chromosomal structural aberration(CSA).使雜種愈傷組織染色體數(shù)目減少，平均每細(xì)胞減少4-9 條染色體； 返回 chromosomal structural aberration