A study has used gas chromatography coupled to a time-of-flight mass spectrometer to build an electron ionization mass spectra database of more than 250 chemicals classified as either volatile or semi ...

300000公斤可售量 参考售价 建议零售价 中国 广东深圳 产品区域 【提取来源】：本品为木犀科植物连翘的干燥果实。秋季果实初熟尚带绿色时采收，除去杂质，蒸熟，晒干，习称“青翘”；果实熟透时采收,晒干，除去杂质，习称“老翘” 。 【化学成分】果实含 ...

The control of peri-implant biofilm plays a crucial role in the long-term success of dental implants. Topical treatment alternatives aimed at reducing or preventing biofilm accumulation around the ...