1)3k cosmic blackbody radiation,3k 宇宙黑體輻射2)integers of the form 3~k+p~α,3k+pα型整數(shù)3)three degree background radiation,3K背景輻射4)K type planetary gear trains,3K行星齒輪系
用法例句
The 3K type planetary gear trains are the important aid units in the transmission systems.
