Permaphase
带硅氧烷聚合物层的色谱固定相
🗣️ 情景例句
It's my fault. I really feel bad about it.
是我的错。 我真的感到很难过。
Great barkers are no biters.
吠犬不咬。
This is the best material we have to offer.
这是本公司所供应的最好的原料。