Now, I'm gonna pass Houdini particles 2 Maya using rf .bin file. Just wondering about attribute mapping things.

velocity -> rfForce(vector) : working
initPosition -> rfMass( vector? ) : maya don't understand.

Is there any other extra variables in .bin(format) can mapping from Houdini.

EX1. I guess, below attributes are vector.(kinda strange)
mass: 0.1/$F*$PT, 1.2/$F*$PT, 0.3/$F*$PT, 1, 1, 1
temperature: 0.5/$T, 0.4/$T, 0.3/$T, 1, 1, 1
force: 0.5/$PT, 0.4/$PT, 0.3/$PT, 1, 1, 1