词汇	类时矢量
释义	类时矢量医timelike vector
随便看	positional parameter positional parameter association positional parameters positional pattern positional phoneme positional PID control calculation positional plagiocephaly positional plagiocephalyflat head positional play positional positive solution positional precision positional probability positional pseudoallele positional punch positional QRS change positional randomness positional rearrangement positional record positional record aggregate positional regulator positional relation positional relationships positional repeatability positional reprentation positional represenation system