Permaphase
带硅氧烷聚合物层的色谱固定相
🗣️ 情景例句
Thank you, Jack, but no thank you.
谢谢你 ，Jack， 但不谢你 。
It's certainly a big improvement over yestterday.
肯定比昨天大有好转。
He has a nice sum of money put away.
他存了一大笔钱。