tail wing; empennage (arrow feathers or tail assembly of plane); tail unit[cedict]
上
shàngㄕㄤˋ
on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]
的
deㄉㄜ˙
díㄉㄧˊ
dìㄉㄧˋ
of; structural particle: used before a noun, linking it to preceding possessive or descriptive attributive[cedict]
really and truly[cedict]
aim; clear[cedict]
螺旋
luó xuánㄌㄨㄛˊ ㄒㄩㄢˊ
spiral, helix; screw[cedict]
撑杆
chēng gānㄔㄥ ㄍㄢ
a pole; a prop[cedict]
所
suǒㄙㄨㄛˇ
actually; place; classifier for houses, small buildings, institutions etc; that which; particle introducing a relative clause or passive[cedict]
阐明
chǎn míngㄔㄢˇ ㄇㄧㄥˊ
clarify; explain clearly[cedict]
的
deㄉㄜ˙
díㄉㄧˊ
dìㄉㄧˋ
of; structural particle: used before a noun, linking it to preceding possessive or descriptive attributive[cedict]