基本解釋[機] 統(tǒng)一標準粗牙螺紋詞組短語短語unified national coarse thread 統(tǒng)一標準粗牙螺紋unc unified national coarse thread 統(tǒng)一標準粗牙螺紋unified coarse thread series 統(tǒng)一的標準粗牙螺紋系列Unified coarse thread hand taps 統(tǒng)一標準粗牙絲攻unified coarse thread更多詞組專業(yè)釋義機械工程統(tǒng)一標準粗牙螺紋統(tǒng)一粗牙螺紋