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“探险者”1号卫星
释义
“探险者”1号卫星
Encyclopedia
工学
人造地球卫星
释
Explorer-1 satellite
“探险者”1号卫星
美国第一颗人造地球卫星。
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welding of magnesium alloys
welding of metal
welding of superalloy
welding qualification and certification
welding remanufacturing
welding robot
welding stress
welding thermal cycle
welding transformer
welding under nuclear environment
welding wire
welfare breeding
Welfare centre
welfare facilities for the disabled persons
welfare facility room
welfare fish separating
welfare home for the elderly
welfare institution
Welfare pluralism theory
welfare services for adolescent
welfare sociology
welfare state system
welfare state theory
welk
Welkom
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