蔡奇指出，经过5年持续奋斗，“十四五”圆满收官，我国经济实力、科技实力、国防实力、综合国力跃上新台阶。成就的取得根本在于以习近平同志为核心的党中央坚强领导，在于习近平新时代中国特色社会主义思想科学指引。我们要深刻领悟“两个确立”的决定性意义，坚决做到“两个维护”，更加奋发有为推进中国式现代化。
The second harmonic is the one you get from the string vibrating in halves. Each half of the string vibrates at twice the frequency of the whole string. The 2:1 relationship between the pitches of the first and second harmonics is called an octave. (I know that the word suggests the number eight, not the number two. Don’t worry about it.) The pitch that’s an octave above middle C has a frequency of 2 Hz, and it is also called C. Both of these notes have the same letter name because in Western convention, notes an octave apart from each other are considered to be “the same note“. The important concept here is that you can move up an octave from any pitch by doubling its frequency. You can also move down an octave from any pitch by halving its frequency.
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"The moon is safe, 2024 YR4 poses no danger, but the work continues," the European Space Agency said Thursday. "If a genuine danger ever emerges, we will not be caught unaware."
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Israeli jets targeted three Iranian oil depots, the Iranian semi-official Fars news agency said on Saturday.
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