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expansion rate中文是什么意思

  • 发泡速率
  • 扩充率
  • 膨胀率

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  • 例句与用法
  • Because of differences in the expansion rates of the two metals, the thermostatic spring winds up or unwinds with changing temperature .
    由于两种金属的膨胀率不同,当温度变化时,恒温制弹簧将卷绕或松开。
  • Determination of tobacco cut expansion rate
    烟丝膨胀率检测方法
  • Average expansion rate
    平均线膨胀率
  • Determination of expansion rate for import and export expandable polystyrene raw materials
    进出口可发性聚苯乙烯发泡倍率的测定
  • Expansion rate hubble constant value ho 71 km sec mpc with only 5 percents margin of error
    71公里秒百万秒差,误差只有百分之五。
  • Further , the expansion rates for both wind and solar photovoltaic power capacities worldwide have hovered around 30 percent a year since the early 1990s
    此外,从1990年代早期至今,每年全世界的风力与太阳能发电的成长率约为30 % 。
  • It is much less than the expansion rate for nuclear generating capacity in its heyday ? 1956 to 1980 ? during which global capacity rose at an average rate of 40 percent annually
    核能发电在1956 ~ 80年间的全盛时期中,成长率比这还高很多,每年全球的平均成长率是40 % 。
  • Astronomers made observations of cepheid variable stars [ pictured above ] ? pulsating stars used to measure vast distances ? in the virgo and other clusters to establish the expansion rate and the universe ' s age
    天文学家用哈勃观测到仙女星座和其它星群中的造父变星(如图) ,以确定宇宙的膨胀速度和宇宙的年龄。
  • A spectral analysis also shows that the supernovae used to measure the universe ' s expansion rate today look remarkably similar to those that exploded nine billion years ago and are just now seen by hubble
    光谱分析同样显示现今用来测量宇宙膨胀率的超新星与那些90亿年前爆炸的也就是现在被哈勃看到的超新星非常的相似。
  • The results showed that passivation of the presulfided hydrogenation catalysts was necessary ; temperature , concentration of o2 , reaction time and expansion rate are important influential factors on the passivation effects
    结果表明,预硫化后催化剂需要经过钝化处理;反应温度、 o2浓度、反应时间及膨胀率是影响钝化效果的主要因素。
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