“spherical depression"是什么意思啊

spherical plain bearing是什么意思 major depression是什么意思 depression dejection是什么意思? Depression radio Spherical Roller Bearing是什么轴承? listen to a takl about how to treat depression.怎么翻译啊 depression的意思是什么 the great depression depression什么意思 despair Depression译成汉语是什么 英语翻译2 Transverse impact of spherical projectile onto clamped Two charged spherical conductors are connected by a long con