the positive pion, composed of an up quark and an anti-down quark.

listen to the pronunciation of the positive pion, composed of an up quark and an anti-down quark.
Английский Язык - Английский Язык

Определение the positive pion, composed of an up quark and an anti-down quark. в Английский Язык Английский Язык словарь

The positive pion, composed of an up quark and an anti-down quark.
pi-plus