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。' f# S( c% L' ]# c" N
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New HTT transmission with a heavy duty clutch for fast, solid engagements that transfers engine energy for additional torque." \; ~$ j! `& U7 I) L