break down
夸克
down quark d
暂无补充释义。
相关词条
touch down
slowing down
rotation of aircraft wheels before touch-down
fill down
sit-down
go down
breaking-down test
down quark d
暂无补充释义。
break down
touch down
slowing down
rotation of aircraft wheels before touch-down
fill down
sit-down
go down
breaking-down test