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- In this system good regioselectivity can be achieved mainly because of the existence of a porous support and the low dielectric constant of the reaction media. 一定条件下该硝化剂具有较好的反应位置选择性，这一是由于反应介质低的介电常数，二是多孔载体也具有明显的作用。
- Influence of the steric hindrance, solvent effect and porous supporters etc. on o/p isomers ratio in the mononitration product of toluene have been investigated, some experimental results were given. 研究了利用立体位阻、溶剂效应、多孔载体等对有效降低甲苯一段硝化产物邻对位异构体比例的影响,文中给出了部分实验结果。
- Any of several tough, porous leather substitutes. 通气性强的塑料几种粗糙的多孔的皮革代用品
- He added sand to the soil to make it more porous. 他往土里掺了些沙子以提高渗水性能。
- The scribe worked hard to support his family. 那个抄写员辛勤工作来养家。
- I have a wife and two children to support. 我有妻子和两个小孩要扶养。
- He had to work hard to support his family. 他不得不努力工作来养家。
- The pillars have to support the weight of the roof. 这些柱子须承受屋顶的重量。
- We all support his scientific research. 我们都支持他的科学研究。
- We are deeply grateful for your support. 我们深深感谢你的支持。
- The theatre has had to close for lack of support. 这家剧院光顾者寡只好关闭。
- Their efforts are worthy of your support. 他们这样努力应得到你的支持。
- They did not waver in their support for him. 他们毫不动摇地支持他。
- The demagogue has won people's support. 那个煽动者赢得了人们的支持。
- In hot weather clothes made of a porous material like cotton are best. 热天穿棉布之类有渗透性的材料做的衣服最为适宜。
- All his support melt away when he really needed it. 在他真正需要支持时，却得不到一丝半点。
- The President had lost the support of the congress. 总统已经失去了国会的支持。
- They all support socialist policies. 他们都拥护社会主义的政策。
- Effect of pore-forming material on the properties of alumina porous supports 开孔剂对多孔氧化铝支撑体的影响
- They urged us to give our support. 他们敦促我们给予支持。
