英语翻译St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.请懂专业的人翻译下,

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 03:47:04

英语翻译St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.请懂专业的人翻译下,
英语翻译
St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.
请懂专业的人翻译下,

英语翻译St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.请懂专业的人翻译下,
St一般指的是苯乙烯
这句话的意思是
苯乙烯本身是聚苯乙烯的良溶剂,聚合物的链式扩散非常容易,因此自动加速现象比其他出现的要晚许多
我觉得这句话有一点小小的错误,这里的solute应该是solvent
solute是溶质,solvent是溶剂
自动加速现象一般是随着自由基反应进行到中期
聚合物生成后导致体系粘度增加所引起
粘度增大直接导致链自由基的终止速率受抑制
出现不断的加速聚合
这种现象的存在是有害的,常常影响产物的质量,出现爆聚
也会出现局部积热的危险情况
一般如果单体如果是聚合物的良溶剂的话
聚合物转化后体系粘度不会显著上升
会使得自由基聚合的自动加速现象推迟
如果能控制转化率的话甚至可以做到不出现自动加速现象
如果单体不是聚合物的良溶剂
则可以通过在聚合物的良溶剂的溶液体系里面进行聚合
当上述办法都无法成立的时候,会考虑在体系能加入链转移剂

what is Griff FL ,AN ,St Mfg Peter, 英语翻译:对.有影响(两种表达有关influence和effecti) 英语翻译Vacuum:1 pc vacuum pump with the effective capacity of 1350 Nm3/h by 100 mbar absolute for the IS 8 Line 11 pc vacuum pump with the effective capacity of 1350 Nm3/h by 100 mbar absolute for the IS 8 Line 21 pc vacuum pump with the effecti 英语翻译St is an effective solute for PSt and the polymer chain’s diffusion is fairly easy,so Auto-acceleration occurs later than others.请懂专业的人翻译下, 英语翻译Aleia:Can you tell something about yourself?Chef Janno:My name is Chef Janno of St.Peter the Apostle Parish church.We are positioned in the canteen of St.Peter.Aleia:What is cooking for you?CJ:Cooking for me is an important thing for me b 英语翻译Aleia:Can you tell something about yourself?CJ:My name is Chef Janno of St.Peter the Apostle Parish church.We are positioned in the canteen of St.Peter.Aleia:What is cooking for you?CJ:Cooking for me is an important thing for me because m 英语翻译21st century ,one sentence in an artical about parents and their eparted children Our life is getting better and better in____ 21st century a/an/the/不填 英语翻译Is Australia an( )( 英语翻译1ST SHIELD:ALUMINUM-POLYESTER/EAA LAMINATEDTAPE WITH OVERLAP BONDED TO THE DIELECTRIC.ALUMINUM/POLYESTER/EAA TAPE IS AN ACCEPTABLE ALTERNATE.DIAMETER OVER TAPE:0.288 ± 0.002 (7.32 ± 0.05 MM) 英语翻译The cartoons vividly depict the current celebration of western and Chinese festivals in China.In the first picture,the Lantern Festival is defeated by St.Valentine’s Day on an arena.The caption reads,“The Lantern Festival PK St.Valent 英语翻译______________the Internet 填空(你昨天上网多长时间)PS:October 1st is our N_____ Day ( )1st is May Day June 1st is the (T )is January 1st. 英语翻译标题:Alive and kickingTwo weeks ago he already made an attempt,but on Monday the 1st of June he made did it and Sharon gave birth to Robin Aiden Westerholt.The name by which he is called is Aiden.Aiden is a healthy little man of 2360 英语翻译It is said that people are accustomed to from their own point of view,the view that they are familiar with what is the best.An old man was gathering sticks in a forest.  At last he grew very tired and hopeless.He threw down all the st 英语翻译Steel is an alloy of iron and carbon with other elements added to produce specific properties.the various types of steel can be grouped under two major headings.carbon steel .a steel in which the main alloying element is carbon .carbon st