... Elbow union直角弯管接头 Three-way union三通管接头 Unit零(部)件、组合件、单位 ...
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three way union 三通管接头
circular three-way union 圆形三通件
union three-way cock 管套三向旋塞
·2,447,543篇论文数据，部分数据来源于NoteExpress
The result is a three-way contest between Lockheed Martin's F-35 Joint Strike Fighter, Boeing's F/A-18E/F Super Hornet and the Eurofighter Typhoon, built by a European Union consortium.
最终美国洛克希德马丁的F-X35型联合攻击机， F/A-18E/F“超级大黄蜂”和欧洲联合研制的欧洲战斗机“台风”三方加入决逐。
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