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- With cyclohexyl methyl dimethoxy silane(CHMMS) as external donor,isotacticity of polymer turned to be more adjustable. 结果表明,使用环己基-甲基-二甲氧基硅烷,聚合物的等规度可调性好;
- Keywords Propylene/ethylene copolymerization;Cocatalyst;External donor;Active sites concentration; 乙烯/丙烯共聚;助催化剂;外给电子体;活性中心浓度;
- He is just listening in external of that room. 他正在那房间的外面留神听着。
- Keywords 9,9-bis（hydromethyl）fluorene （DMMF）;Synthesis;Structure identification;propylene polymerization;external donor; 合成;结构表征;丙烯聚合;给电子体;
- This news program only covers external events. 这一新闻节目只报道国外消息。
- fect of four different alkoxysilanes used as external donor on activity, stereospecificity, andhydrogen response of N-catalyst in propylene polymerization were studied. 研究了分别采用4种不同外给电子体进行丙烯聚合时,N催化剂的活性、氢调敏感性及聚合物等规度的变化情况。
- She sets great store by external politeness. 她很注重表面的虚礼。
- external donor 外部捐赠者
- Our external trade has expanded during recent years. 我国的对外贸易近几年来有所发展。
- Nitroform is such a strong proton donor. 三硝基甲烷是一个极强的质子给予体。
- The problem is finding a compatible donor. 问题是要找到一个相匹配的骨髓捐赠者。
- But William has no curiosity about his donor. 但是威廉对那个捐精者毫无兴趣。
- He judge people by mere external clothes rather than internal character. 他判断人只靠着外表的衣服而不是内在的品格。
- The metal or plastic external structure of a motor vehicle. 车身机动车的金属和塑料的外部结构
- The donor prefers to remain anonymous. 捐赠者希望不披露姓名。
- The donor's identity is a close secret. 捐赠人的身分是一个严加保守的秘密。
- I wish to be an anonymous donor. 不希望公布姓名。
- External torques arise from outside the system. 外转矩是由系统外部生产的。
- The donor wants to be listed as John Doe. 该捐献者希望匿名
- Would you volunteer to become blood donor? 如果让你义务献血你能做到吗?
