Mach (name); Ernst Mach (1838-1916), German physicist; Mach (aeronautics), unit of speed based on speed of sound = 1 Mach = 1224 km per hr[cedict]
一
yīㄧ
one; 1; single; a (article); as soon as; entire; whole; all; throughout[cedict]
号
háoㄏㄠˊ
hàoㄏㄠˋ
roar; cry[cedict]
day of a month; (suffix used after) name of a ship; (ordinal) number[cedict]
风洞
fēng dòngㄈㄥ ㄉㄨㄥˋ
wind tunnel[cedict]
测试
cè shìㄘㄜˋ ㄕˋ
measure and test; trial; beta (software); test performance of[cedict]
倒数
dào shǔㄉㄠˋ ㄕㄨˇ
dào shùㄉㄠˋ ㄕㄨˋ
to count backwards (from 10 down to 0); to count down; from the bottom (lines on a page); from the back (rows of seats)[cedict]
(math.) reciprocal[cedict]
一
yīㄧ
one; 1; single; a (article); as soon as; entire; whole; all; throughout[cedict]
分
fēnㄈㄣ
fènㄈㄣˋ
to divide; to separate; to allocate; to distinguish (good and bad); part or subdivision; fraction; one tenth (of certain units); unit of length equivalent to 0.33 cm; minute[cedict]
part[cedict]
种
zhǒngㄓㄨㄥˇ
zhòngㄓㄨㄥˋ
seed; breed; species; race; strain; kind; type; sort; classifier meaning kind, type, sort; classifier for languages[cedict]