Permaphase
带硅氧烷聚合物层的色谱固定相
🗣️ 情景例句
Is he still in his office?
他还在办公室吗？
I love that shirt.
我喜欢这件衬衫。
Because I've just retired.I want to buy a small house in the country.
因为我刚退休。我想在乡下买幢小房子。