content variation

• 含量变化

content variation的用法和样例：

例句

1. The change of the malonadehyde content in the seed has no remarkable regularity.
   照射种子的丙二醛含量变化规律不明显。
2. Variation of Alkaloid Contents in Calli Culture of Berberis pruinosa F.
   粉叶小檗愈伤组织中生物碱的含量变化。