单词	边界曲面
释义	边界曲面bounding surface
随便看	derivation key derivation language derivation of algebra derivation of ring derivation of (something), derivation (of water) derivation (pareto) derivation rule derivations derivation sequence derivation tree derivatisation derivatise derivatist derivative derivative action derivative action coefficient derivative action gain derivative action time derivative action time constant derivative analysis isotope derivative and integral proportional electronic controller derivative assets derivative block derivative chord