此种器械产生磁场的功率足以在人的大脑细胞里激发出电流而不会使人体有所损害。

The machine's magnetic fields are powerful enough to induce electric currents in human brain cells without being harmful.

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本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料，得到了它们的低频谱。

The data of polar motion, rotation of the earth and atmospheric excitation function are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained.

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因此，在这样激光功率条件下，为提高原子激发效率而增加激光谱线宽度的做法并不是必要的。

So it is not necessary to use a broad-band laser to guarantee excitation efficiency for an atom with hyperfine split levels.

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