tourmaline

常見例句

用作名詞 (n.)

• Never use chemicals such as hydrofluoric acid or ammonium fluoride to clean Tourmaline because it can erode the stone.
  從來不使用化學(xué)物質(zhì)如氫氟酸或氟化銨清潔電氣石，因爲(wèi)它可以削弱石頭。
• The main anionic finishing agents applied in textiles are tourmaline and natural ores with micro-pores and lanthanon.
  紡織品中應(yīng)用的負(fù)離子整理劑主要爲(wèi)電氣石和加稀土元素的天然超微多孔質(zhì)鑛石。
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