HFA
常见例句
- HFIP had been synthesized from hexafluoroacetone(HFA)by catalysis in solvent.
采用液相催化加氢法,将六氟丙酮(HFA)三水化合物催化加氢合成六氟异丙醇。 - The patients of LFA group were undergone semi-closed circuit LFA with N 2O-O 2-Isoflurane and compared with HFA group.
LFA组接受半紧闭系统N2 O -O2 -异氟醚低流量麻醉 ,并与 2 2例HFA进行对比研究。 - Put all in a check in folio, together with a pen and the HFA (Hold For Arrival) messages and faxes.
记录所有的检查项目,将钢笔抵达信息及传真等集中在一起。 - This paper introduces the reaction mechanisms,process and result from reacting the HFA with phenol,aniline and cresol.
介绍了六氟丙酮与苯酚、甲基酚和苯胺的反应机理、过程和结果。 - Firms, for instance, had committed to donating a million HFA inhalers to clinics around the country.
例如已有公司承诺捐助100万个氢氟烷烃式吸入器到全美各地的诊所。 - The average threshold of HFA was significantly higher than that of CFA and speech frequency (SFA) and had a positive correlation with both CFA and SFA.
延伸高频平均听阈 (HFA)、常用频率平均听阈 (CFA)和言语频率平均听阈 (SFA)分别为 17.;60 3 1± 6 返回 HFA