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....
水银的密度比水大得多.Mercury has a much greater density than water.水银的储存量并不丰富,分布也不广泛.Mercury is by no means, abundant or widely distributed.即使在室温下,水银的发挥性也很显著.Mercury is appreciably volatile even at room temperature....
NATO defense ministers wrap up their meeting in Brussels today.北约各国国防部长今天圆满结束了在布鲁塞尔的会议。It's been a tumultuous day at the international trade negotiations in Brussels.那是布鲁塞尔国际贸易谈判中纷乱的一天。Finance Ministers are meeting ...