圓柱頭用沉孔 的英文怎麼說
中文拼音 [yuánzhùtóuyòngchénkǒng]
圓柱頭用沉孔
英文
fasteners-counterbores for hexagon socket head serewsand slotted cheese head screws-
Diameters of counterbores for hexagon socket head cap screws and screws with cheese head or pan head ; manufacturing dimensions
六角凹頭有帽螺釘和圓頭螺釘或大柱頭螺釘用沉孔直徑
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