マントル対流 でしょう
mantorutairyūdeshō
1. Probably mantle convection.
Noun
1. Probably mantle convection.
1. mantle
2. (gas) mantle
1. it seems; I think
2. right?; don't you agree?
1. If/when mantle
1. Not mantle.
1. Mantle.; Is.
1. Is not a mantle.; It is not a mantle.
1. It was not a mantle.
1. Probably mantle.
1. In the mantle.; With the mantle.