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单词 hf
释义

hf

听听怎么读
是什么意思
  • abbr.

    half 半;hard firm 坚硬(铅笔芯);hard finish(ed) 缓硬的;hard-faced 表面硬化的

  • 英英释义

    hf

    • n.
      • a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons

        同义词:hafniumatomic number 72

      • 3 to 30 megahertz

        同义词:high frequency

    学习怎么用

    权威例句

    Update of REACH-1 and MERIT-HF clinical trials in heart failure. Cardio.net Editorial Team.
    Archean crustal evolution in the northern Yilgarn Craton: U–Pb and Hf-isotope evidence from detrital zircons
    The application of a Th Hf Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal cont...
    Efficacy and safety of exercise training in patients with chronic heart failure: HF-ACTION randomized controlled trial.
    Cardiac Resynchronization-Heart Failure (CARE-HF) Study Investigators : The effect of cardiac resynchronization on morbidity and mor...
    Extensive theoretical studies of the hydrogen‐bonded complexes (H2O)2, (H2O)2H+, (HF)2, (HF)2H+, F2H?, and (NH3)2
    Effect of rosuvastatin in patients with chronic heart failure (the GISSI-HF trial): a randomised, double-blind, placebo-controlled t...
    Vasen HF, Watson P, Mecklin JP, Lynch HTNew clinical criteria for hereditary nonpolyposis colorectal cancer (HNPCC, Lynch syndrome) ...
    Effects of Exercise Training on Health Status in Patients With Chronic Heart Failure: Findings From the HF-ACTION Randomized Control...
    Effect of n-3 polyunsaturated fatty acids in patients with chronic heart failure (the GISSI-HF trial): a randomised, double-blind, p...
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