round-head screw

基本解释园头螺丝

网络释义

1)round-head screw,园头螺丝2)round-head machine screw with grommet nut,园头机器螺丝带手拧螺母3)socket screw,凹头螺丝4)doublethread,双头螺丝5)screwed joint,螺丝接头6)tommy screw,贯头螺丝

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