又看了一下冰钻的解释,说是最新科技,New high torque 2 H.P,可以用8‘, 9’,10‘三种钻头,应该没有问题。 6 d& C, A0 f$ N0 X0 H3 x5 n+ O# n3 u' B, o; O9 o: ~( P( S% D
New HTT transmission with a heavy duty clutch for fast, solid engagements that transfers engine energy for additional torque./ B2 `8 K6 y% G5 H9 b) u" j