De Graaf is a Dutch occupational surname. In modern Dutch de graaf means the count, but in the past it also referred to the head of the municipal council called schepen.
de Graaf 英语释义
英语释义
1. a mature liquid-filled cavity in a mammalian ovary that ruptures during ovulation to release an egg
2. a mature follicle in a mammalian ovary that contains a liquid-filled cavity and that ruptures during ovulation to release an egg — called also vesicular ovarian follicle
de Graaf 例句
英汉例句
They have cleverly adapted a particle accelerator, a van de Graaf accelerator, to accelerate small dust particles.