The synthesis of ν - curcumene was described. The experiment affirmed that ν - curcumene can aromatize to α - curcumene readily at room temperature.用金属锂 - 液氨一步还原法合成γ姜黄烯.实验证实γ姜黄烯极不稳定,室温下极易芳香化转变成α姜黄烯....
硬质合金 、 熔金属 、 硬合金 ( 刚石 ) 品等.Hard alloy, refractory metal, super hard alloy ( diamond ) products, etc.在上雕琢平面的封印别针在海洋蓝色和黑金刚石水晶; 铑被镀的细节.Faceted seal brooch in Ocean Blue and Black Diamond crystal; rhodium - plated details.分析...