Carbonyl groups readily attach themselves to nickel or cobalt atoms , but not so strongly that they cannot link to other molecules and jump ship to form larger molecules 羰基很容易与镍或钴原子结合，可是键结并不强，因此它还是可以与其他分子结合，甚至跳船形成更大的分子。
Hydrogen bonding is responsible for the properties of water and is important in many biological systems for holding together the structure of large molecules , such as proteins and dna 氢键在生物体内承担着维持水的性质以及在多数生物学系统中将蛋白质和dna这样一些大分子的结构结合在一起的功能。
Unfortunately , egf and fgf are large molecules that have difficulty crossing the blood - brain barrier , the meshlike network of tightly woven cells that lines the blood vessels of the brain 遗憾的是， egf与fgf是大分子，很难穿过血脑屏障（这是由许多细胞紧密交织而成的网状构造，形成脑血管的内衬） 。
It is a true solution of ions ( e . g . potassium , sodium , and chloride ) , small molecules ( e . g . sugars , amino acids , and atp ) , and a colloidal solution of large molecules ( e . g . proteins , lipids , and nucleic acids ) 它是含离子（钾离子，钠离子还有氯离子） ，小分子（糖，氨基酸， atp ）还有大分子胶体（蛋白质，脂肪，核酸）的溶液。
Carbon materials with disordered carbon / graphite composite structure , produced from synthetic graphite coated with large molecule polymer and pyrolyzed at high temperature , are investigated as anodes for lithium ion batteries 与国内外同类产品的比较结果表明，本研究的mcmb具有优异的充放电性能和循环稳定性，是一种较为理想的锂离子电池负极材料。
However if these breakthroughs are to be is be realised in practice a paradigm shift in synthetic chemical techniques will be necessary so we can create at will really large molecules with accurately defined structures at the atomic level 这些基础性的进展暗示着在我们口袋中的超级电脑（以及我们的大脑）及可轻易地抵挡超级飓风及剧烈地震的建筑物将成为现实。
Because there are few gaps between the cells , the protease inhibitors must be able to pass through the cell membranes to reach the brain tissues beyond , and most large molecules cannot breach this so - called blood - brain barrier 因为管壁细胞之间少有间隙，因此蛋白酶抑制剂必须要能够穿透细胞膜，才能够到达血管外的脑组织，而大分子大都无法冲破这层所谓的血脑屏障。
The ns5 protein of dengue virus is the largest molecule encoded by the virus genome with a molecule weight of 104 000 . recent research work indicates that the ns5 protein acts as the rna - dependent rna polymerase ( rdrp ) in virus which has the ability to recognize and bind its template rna to synthesize a complementary strand 近年来的研究表明， ns5蛋白具有rna依赖的rna聚合酶( rdrp )功能，即可以识别具有相对特异性的模板rna并与之结合，合成与模板互补的rna链，在病毒基因组复制过程中起关键作用。
Abstract : in the process of preparing ultrafiltration membrane , the introduction of hydrated lanthanum oxide la2o3 . nh2o makes the ultrafiltration membrane possess two functions - separating large molecules and decreasing the concentration of fluorine in the water . the mechanism of removing fluorine of the ultrafiltration membrane was discussed 文摘:在超滤膜制备过程中，向铸膜液中引入亲氟物质水合氧化镧，经熟化后制备的混合超滤膜具有分离大分子和降低水体中氟离子浓度两种功能.以含氟饮用水为研究对象，对其混合膜的降氟机理进行了探讨
