1)  RF gasket
RF衬垫
2)  RF
RF
1.
Anti-corrosion Material RF Used in Oil Well Cement;
油井水泥用RF抗腐蚀材料
2.
Analysis of influencing factors and preventive measures for RF field artifacts in MR images;
对MR图像RF磁场性伪影的分析及预防
3.
Experimental study on influence on lycopodii extracts to AA rat RF and Ig;
伸筋草提取物对AA大鼠RF及Ig影响的实验研究
3)  RF-Ⅱ
RF-Ⅱ
1.
Application of RF-Ⅱ Pediclescrew System and Cage in Lumbar Spondylolisthesis;
RF-Ⅱ联合Cage在腰椎滑脱治疗中的临床研究
4)  RF-PECVD
RF-PECVD
1.
Silicon nitride film onto steel substrate prepared by RF-PECVD;
RF-PECVD法在钢衬底上沉积氮化硅薄膜的研究
2.
Study of the Si-O-N Barrier Properties by RF-PECVD;
射频等离子体化学气相沉积(RF-PECVD)制备Si-O-N特种阻隔包装材料的研究
3.
Properties of a-Si: H Prepared by RF-PECVD & DBD-PECVD and Their Compare;
RF-PECVD和DBD-PECVD制备a-Si:H薄膜的性能研究及其比较
5)  Rf value
Rf值
6)  RF-PCVD
RF-PVCD
参考词条
补充资料:einsenoside Rf
分子式:
CAS号:

性质:四环三萜类衍生物,白色粉末(丙酮)。熔点197~198℃,旋光度+6.99 (c=1.00,甲醇)。o-甲基化人参皂苷Rf为丛晶(已烷),熔点171℃,旋光度+0.30 (c=0.99,氯仿)。存在于五加科植物人参[Panax ginseng C.A.Mey er(P. schinseng Nees)]的根、花蕾、茎中。能减少乙酰胆碱引起的豚鼠离体子宫的收缩;对大鼠有减慢心率和双相性血压(先升后降)作用;对猫的行为和脑电图显示中等抑制;有抗疲劳作用。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。