convection
convection 英 [kənˈvekʃn] 美 [kənˈvɛkʃən]
n. [流][气象] 对流；传送
名词复数:convections
- Convection is the circular motion that happens when warmer air or liquid — which has faster moving molecules, making it less dense — rises, while the cooler air or liquid drops down.
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- n. [流][气象] 对流；传送
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1. The machine circulated hot air by convection.
这个机器使热空气通过对流来循环。
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2. Mantle material can sink at a plate boundary, and then flow back upward farther away, pushing on the crust — a process called small scale convection.
地幔，这种物质可以在板块边界处下沉，然后向上回流到较远的地方，再与地壳相碰撞——这个过程被称为小规模的对流。
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3. convection within the red giant dredges the new proto-dust atoms from the core up to the surface.
红巨星内部的对流碰撞出新的原始尘埃原子会从其核心撞到表面。
- convection (n.) 1620s, "act of carrying or conveying," from Late Latin convectionem (nominative convectio) "the act of carrying, a carrying or bringing together," noun of action from past-participle stem of Latin convehere "to carry together," from assimilated form of com "with, together" (see con-) + vehere "to carry" (from PIE root *wegh- "to go, move, transport in a vehicle").
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