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entoderm    
内胚层; 下胚层

内胚层; 下胚层

entoderm
n 1: the inner germ layer that develops into the lining of the
digestive and respiratory systems [synonym: {endoderm},
{entoderm}, {endoblast}, {entoblast}, {hypoblast}]


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  • Soviet space program - Wikipedia
    Soviet space industry contested the US in experimental technologies such as electric propulsion, fission-powered spacecraft, nuclear thermal rockets, and space weapons such as the Almaz space stations and Polyus laser
  • Soviet rocketry - Wikipedia
    Korolev teamed up with propulsion engineer Valentin Glushko, and together they excelled in the rocket industry, pushing the Soviet Union ahead of the United States in the space race
  • Rocket Development | Soviet Space Program
    Seven decades of Soviet rocket engineering, from a captured V-2 to the engines that still power American launches in 2024 - and one rocket that never worked The R-7 family has more than 1,900 cumulative launches since 1957, making it the most-launched orbital rocket family in history
  • Dawn of the Space Age - NASA
    The historic Sputnik launch on Oct 4, 1957 marked the beginning of the space age, leading to the establishment of NASA as well as the U S –Soviet space race
  • Soviet Russian Space Programs - The Complete List Missions
    The Soviet Union initiated the space race with the launch of Sputnik 1 in 1957, the first artificial satellite, and followed with Yuri Gagarin ’s orbital flight in 1961, making him the first human in space
  • A History of Russia’s Launch Vehicles | New Space Economy
    From these theoretical foundations rose a lineage of launch vehicles that would define the Space Race, shock the world, and establish an enduring legacy of robust, powerful, and pragmatic engineering
  • Soviet Space Program | Historical Archive
    Explore the comprehensive history of the Soviet space program, from Sputnik to Mir Discover the cosmonauts, spacecraft, and achievements that defined an era
  • Russian Rockets and Space Launchers | Historic Spacecraft
    Russian rockets have accomplished many important firsts The first artificial satellite, the first human spaceflight, the first probes to the Moon, and the first space station were all launched on Soviet and Russian rockets
  • From Sputnik to Spacewalking: 7 Soviet Space Firsts - HISTORY
    On the anniversary of Sputnik's launch, explore seven of the Soviet Union’s firsts in the history of space exploration
  • Spaceflight :Soviet Russian Launch Vehicles - Centennial of Flight
    Since 1957, the Soviets and Russians have launched more than 1,600 R-7-derived rockets, more than any other launch vehicle in the world The R-7 launched the world's first artificial satellite, Sputnik, into orbit in 1957





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