专业释义
-
夹心结构 - 引用次数：5
Compound 7 displays symmetrical sandwich-type polyanion framework based on B-α-PW_9O_(34)~(10-) building blocks, in which the units linked each other forming a 2-D layer via Na~+ ions.
该化合物的四核夹心结构构筑单元间通过Na~+离子连成2-D层状结构。
参考来源 - 多金属钨硼（磷）酸盐的水热合成、结构及性质研究夹心型 - 引用次数：3Compounds 3 to 5 are all sandwich-type complexes in which two trilacunary α-B-BiW9O339- anions are connected by alternate three Na+ and three transition metal ions. All the water molecules in the sandwich belt are substituted by imidazole molecules.
化合物3、4和5均是利用三个过渡金属离子和三个Na+离子交替排列形成的六元环将两个邻近的三缺位α-B-BiW9O339-连接形成的夹心型化合物,并且夹层中心过渡金属离子上的水分子全部被咪唑类配体取代。
参考来源 - 三缺位Keggin型杂多钨酸盐与过渡金属的配位组装、晶体结构和磁性研究
·2,447,543篇论文数据，部分数据来源于NoteExpress
双语例句
-
The building envelope also features 800mm earth fill over XPS insulation on the roof and sandwich-type insulation between fair-faced in-situ concrete external walls.
建筑立面特征还包括在屋顶上800毫米填土方覆盖的XPS保温层和清水现浇混凝土外墙之间的夹心保温层。
-
And if we can't even decide what type of sandwich we might like next week, how can we possibly decide what type of job we'd like to be doing in twenty years?
如果我们连自己下周可能会喜欢什么三明治都不能决定，那我们怎么可能决定自己在二十年中喜欢从事什么工作呢？
-
Lunch is that inconvenient fifteen minutes where you can only type with one hand because you're holding a sandwich in the other.
午餐是很不方便的十五分钟：你只能一只手打字，因为另一只手在拿三明治。
应用推荐