短語詞組短語pipe thread plug gauge 管螺紋塞規(guī)screw thread plug gauge 羅紋界限量規(guī)thread plug gauge 螺紋塞規(guī)optical thread plug gauge 光學(xué)螺紋塞規(guī)thread ring plug gauge 螺紋環(huán)塞規(guī) 返回 plug thread gauge