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Long long ago, we knew the periodic motion of a planet.很久以前, 我们就知道行星的周期运动.Periodic checks are taken to ensure that high standards are maintained.定期检查以确保维持高水准。Some commercial laboratories use periodic nitrate tests as gui...
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The microstrip log periodic antenna was discussed and analyzed.讨论和分析微带对数周期天线.Two periodic jackknife, be helpful for national economy growing quickly continuously.两个周期的重叠, 有利于国民经济持续快速增长.The motion is periodic, which means...
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periodic的音标：periodic的英式发音音标为：[ˌpɪəri'ɒdɪk]periodic的美式发音音标为：[ˌpɪri'ɑdɪk]...