棉芯的英文：
cotton core
The bulb of a thermometer is covered with a close fitting cotton wick, which is kept wetted with water
在温度计的球上，缠着一层配合紧密的棉芯，并用水使其保持湿润。
n. 棉，棉花，棉布
v. 明白，领悟
She lives by raising cotton.
她靠种植棉花维持生计。
They grow cotton of long staple.
他们种植长纤维棉花。
Cotton is the staple of the area.
棉花是这个地区的主要农作物。
They channeled their cotton field.
他们在棉田里挖了水渠。
cotton drawers panty
棉内裤
n. 核心；精髓；果心；地核
v. 挖去…的果心
inner core tube
内倒望远镜
magnetic core switch
磁铁心开关
core ,for electric transformers
线圈心,变压器用
uniformly enriched core
均匀浓集活性区
two core reactor
双活性区反应堆