孵化期大多为7到21天。

The incubation period is most frequently between 7 to 21 days.

滞育与幼虫孵化期、气候、生态条件和食料有关。

The diapause of pine caterpillar is relevant to the larval hatching period, food, climate and other ecological conditions.

经过孵化期之后，Derby于2005年7月正式发布。

After an incubation period, Derby was officially released in July 2005.

孵化期曾被描述为密封过渡仓 (airlock)一类的东西。

The incubator has been described as an airlock of sorts.