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 helium Ⅱ flow 添加此单词到默认生词本

氦Ⅱ流动

低温




    1. Today's blimps use inert helium instead of the highly flammable hydrogen that destroyed the famous Hindenburg dirigible in New Jersey in 1937.
    2. Cryodynamics Inc. of Mountainside, N.J., which has been building cooling devices for spacecraft, says it is using that space technology to develop a small home refrigerator that uses inert helium or nitrogen.
    3. He disputed their claims that their device produced excess heat, or that it yielded byproducts of fusion, including helium, tritium, neutrons and gamma rays.
    4. For me, it was exotic to move into helium balloons two months ago."
    5. The plant generated electricity briefly this summer and was given NRC approval to go to 82% power shortly before being closed in July to replace a helium pump.
    6. Tritium decays fairly rapidly _ 5.5 percent of any starting amount turns into inert helium in a year _ and must be replenished in the nation's nuclear weapons from time to time.
    7. Even with a severe helium loss, the blimp would slowly descend rather than crash, Airship said.
    8. The pigeons ignored plastic owls, traps and helium balloons; they were unruffled by high-frequency sound waves.
    9. A familiar but exhilarating sight: billowing thousands of brightly colored helium balloons soar into the air, get caught by the wind, disappear into tiny points against the sky.
    10. Some preferred filling the domed stadium with helium gas and letting it float the 40 yards.
    11. He lost out on the first successful trans-Atlantic helium balloon crossing when his craft ditched 108 miles off the western French coast.
    12. The postponements were caused by a helium leak, bad weather and a corroded power transfer switch in the rocket.
    13. A dust devil, or mini tornado, struck the helium balloon, which has sophisticated look-down radar, he said.
    14. Crews worked Saturday to repair a helium leak that forced the postponement of the launch of an Atlas rocket, but a spokesman said the problem will be fixed in time for a Sunday blastoff.
    15. IBM and most other U.S. companies abandoned research in 1983 on the chips, called Josephson Junction devices, partly because of the complications of cooling with helium.
    16. After the unscheduled break, Miss Foran testified that her head was resting on a plastic helium balloon that blew up in her face after the crash.
    17. A Josephine computer is one in which high speed is achieved by using circuits supercooled by liquid helium to achieve superconductivity.
    18. The entire set of four liquid helium vent ducts was replaced Saturday.
    19. A lunar resource of potentially great commercial value is helium-3, an isotope of helium with three atomic nuclei instead of the more common two.
    20. Its use represents a big improvement over the more costly and formerly required liquid helium, which boils at about minus 452 degrees Fahrenheit.
    21. Red and silver helium balloons bearing the same message bobbed among the well-wishers.
    22. A gas-cooled reactor, for example, uses helium as a coolant instead of water and its core is encased in graphite.
    23. In one type of fusion reaction, two deuterium nuclei fuse to form helium.
    24. "We have no reason to believe we have a generic problem," NASA spokeswoman Lisa Malone said. "All leak tests (with helium) have passed.
    25. Also in Sunday's kickoff ceremonies, a red and yellow helium balloon took flight at Paris' Tuileries Gardens carrying a man dressed in a wig and period costume.
    26. Col. Ron Rand, an Air Force spokesman, said the culprit was a faulty helium pressure regulator.
    27. Race officials said they regretted delaying the launch to morning because balloonists were forced to blow out precious helium that expanded in the warmer daytime air.
    28. The pipes and valves on Columbia and Atlantis had passed the nitrogen and helium tests.
    29. The fuel transfer system also includes a four-inch pipe used to pressurize the tank and a two-inch line that pumps helium early in the fueling process.
    30. Fusion is the merger of hydrogen atoms into helium with the release of substantial energy.
    helium Ⅱ flow
    helium Ⅱ theory
    helium-3 counter
    helium-3 maser
    helium-atmosphere
    helium-atmosphere box
    helium-cooled paramet...
    helium-cooled reactor
    helium-like ion
    helium-mercury direct...
    helium-neon gas laser
    helium-neon laser
    helium-neon maser
    helium-nitrogen-oxyge...
    helium-oxygen diving
    helium-rich core
    helium-rich star
    helium-storage room
    helium-strong star
    helium-weak star
    heliumshield
    heliweld
    heliweld (氦气保...
    helix
    helix (tube)
    helix accelerator
    helix agitator
    helix angle
    helix angle at refere...
    helix angle of tooth
    helix angle tester
    helix array
    helix Bourdon tube
    helix circuit
    helix coil
    helix dislocation
    helix element
    helix flash tube
    helix grid
    helix heater
    helix impedance
    helix lead
    helix linac
    Helix Nebula(NGC 7293)
    helix of cylindrical ...
    helix pair
    helix parameter
    helix recorder
    helix slow wave line
    helix structure
    helix travel(l)ing wa...
    helix tube
    helix TWT
    helix voltage
    helix waveguide
    helix(ribbon type) ag...
    helix-coil transition
    helix-coupled vane ci...
    helix-coupled-vane ci...
    helix-milling
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