单词	accumulation of tartar
释义	accumulation of tartar 齿石积聚
随便看	forward difference forward-difference forward difference function forward difference matrix forward difference method forward-difference method forward difference operator forward-difference operator forward difference quotient forward differential forward differential equation forward differential resistance forward diffusion equation forwarddirected forward directed forward-directed Forward Directing Post forwarddirection forward direction forward directional characteristics Forward Direction Center Forward-direction filter forward direction transmission forward disconnect forward discount