Grain fill的用法和樣例：
例句
- It accumulates in the amyloplasta of the endosperm cells during grain filling.
在穀粒灌漿時，它在胚乳細胞的造粒體中積累。 - It was suggested that low sink activities in grain filling period,especially at early stage,account for an important reason for poor grain plumpness in IHR.
說明灌漿期特別是灌漿初期籽粒庫的生理活性低是亞種間雜交稻籽粒充實不良的重要原因。
