英语人>网络例句>芳香化合物 相关的搜索结果
网络例句

芳香化合物

与 芳香化合物 相关的网络例句 [注:此内容来源于网络,仅供参考]

The optimum conditions for this reaction were confirmed: the mole ratios of the Lewis base and AlCl〓 with the electron-rich aromatic monomer are 1. 2 and 3. 4, respectively; 1, 2-dichloride ethane is the most suitable solvent in this reaction; The solution of the two reactants must be added slowly to a large amount of solvent containing catalyst under pseudo-high dilution conditions; The Lewis base, such as NMP, DMF are applicable in this reaction system.

在此理论的指导下,通过对单体结构的模拟,高选择性地合成了一种新型结构的芳香环状聚硫酯二聚体,对其结构进行了精确的表征,在不同溶剂中得到了该环状二聚体的单晶,单晶X-ray衍射表明该二聚体为环张力极小的大环化合物。

第21/21页 首页 < ... 13 14 15 16 17 18 19 20 21
推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。