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national standard straight pipe thread | |
gen. | 美国标准直管螺纹; 圆柱形管螺纹 |
for | |
gen. | 合; 为; 替; 给; 因为 |
mechanical joint | |
wind. | 机械连接 |
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美国标准直管螺纹; 圆柱形管螺纹 | |||
国家标准直管螺纹 |
national standard straight pipe threads for mechanical joints : 6 phrases in 1 subject |
Aviation | 6 |