目的:研究芒果苷单钠盐的制备工艺.OBJECTIVE To study a preparation method of mangiferin monosodium salt.结果:首次合成芒果苷单钠盐,芒果苷单钠质量收率为92.8%.RESULTS Mengoferin monosodium salt was first prepared crystallized out with 92.8 % yield.方法:将芒果苷置于水和丙酮的...
dross coal渣煤, 不粘(结性)煤From moment to moment, a wise man removes his own impurities, as a smith removes the dross of silver.聪明的人时常清除内心的污垢，就如同工匠清理银矿中的杂质。What's gold and silver ? Mere dross.金银财宝,身外之物.I go through phases...