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。1 y1 t5 \" f0 ?" h3 n' C* k
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New HTT transmission with a heavy duty clutch for fast, solid engagements that transfers engine energy for additional torque.+ l$ I! m- Q4 a5 z* u- {5 r