「davidite」を含む例文一覧(1)
- Synthetic fibers, such as polyester fibers, kneaded with the powder of a spontaneously polarizing substance 15 such as tourmaline and with the powder of an exciting agent 16 for exciting the substance 15 to generate minus ions, such as a natural ore, for example, davidite, are prepared.
また、天然放射性希有元素鉱物の微粉末だけでマイナスイオンを発生させるには放射線量がかなり大きな量となる課題があった。 - 特許庁
- 特許庁
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