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....
invertebrate zoology无脊椎动物的动物特性soil invertebrate土壤无脊椎动物Half of all invertebrate species live in tropical rain forests.一半的无脊椎动物物种生活在热带雨林中.marine invertebrate海洋无脊椎动物Cropland surface soil invertebrate living in it is conside...
格洛弗认为史密斯说他坏话，也许是出于嫉妒。Glover thinks that Smith did him down, perhaps out of envy.她似乎觉得说别人的坏话很难。It seemed she found it difficult to speak ill of anyone.我犹豫了，不想说同事的坏话。I hesitated, not wanting to tell tales about my colleagu...
位置上接近的元素通常也是有关系的,很多界面中采用粗边框矩形来分组.Items in proximity to one another are generally related.方化矩形是指可以分割成至少两个正方形的矩形.A squared rectangle is a rectangle dissected into at least two squares.环面可由矩形把其两对对边分别重叠起来而得到.A torus can be o...