弧長參數

parametrization by arc length (of a space curve)

arc

arc length (the length of a curve segment)

length / long / forever / always / constantly

chief / head / elder / to grow / to develop / to increase / to enhance

three (banker's anti-fraud numeral)

to take part in / to participate / to join / to attend / to counsel / unequal / varied / irregular / uneven / not uniform / abbr. for 參議院|参议院 Senate, Upper House

ginseng / one of the 28 constellations

used in 參差|参差[cen1 ci1]

parameter

to count / to count as / to regard as / to enumerate (sb's shortcomings)

number / figure / several / CL:個|个[ge4]

frequently / repeatedly