six DOF六自由度sixnum.六six thousand seven hundred and forty four(=6744) 六千七百四十四six thousand eight hundred and eighty six(=6886) 六千八百八十六six thousand eight hundred and twenty six(=6826) 六千八百二十六six thousand five hundred and sixty eight(=6568) 六千五百六十八six thousand three hundred and forty five(=6345) 六千三百四十五six thousand three hundred and twenty one(=6321) 六千三百二十一six thousand one hundred and thirty seven(=6137) 六千一百三十七six thousand six hundred and twenty seven(=6627) 六千六百二十七six thousand two hundred and ninety eight(=6298) 六千二百九十八six thousand eight hundred and thirty six(=6836) 六千八百三十六