The content of barium in lapis lazuli was successfully determined by oxygen-enriched shield flame atomic absorption spectrometry.
采用富氧屏蔽火焰原子吸收光谱法成功地测定天青石中钡含量。
The utility model is made by adopting the principles of radio frequency absorption, filtration and shield.
它是采用射频吸收、滤波与屏蔽原理制成。
The utility model is made by adopting the principles of radio frequency absorption, filtration and shield.
它是采用射频吸收、滤波与屏蔽原理制成。
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