大学英语词汇短语释义解析及例句 convective zone


释义：

convective zone 对流层

例句：



Occupying its outermost third is a convective zone where gas is rising and falling in planet-sized cells.



Below the convective zone lies a radiative zone, which is a calmer region, where photons transport the Sun's energy outward.



Last year, scientists using a technique called helioseismology, probed the Sun's interior, revealing that currents of gas at the base of the convective zone change velocity every 16 months.