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- With di-iso-butyl dimethoxy silane(DIBS), DQ catalyst was more sensitive to hydrogen regulation. 使用二异丁基-二甲氧基硅烷,DQ催化剂的氢调敏感性更好。
- Effects of various external electron donors on activity, response to hydrogen regulation and stereoselectivity of DQ catalyst in propylene polymerization were studied. 研究了使用不同的外给电子体进行丙烯聚合时,DQ催化剂活性、氢调敏感性、立体定向性以及聚合物相对分子质量和相对分子质量分布的变化。
- The hydrogen regulation has less effect on the activity of CSI catalyst and the stereoregularity of product.The stereoregularity of polypropylene is high with low content of ash. 该催化剂的活性和产品的等规度受氢调影响较小,聚丙烯产品的等规度较高,灰分较低。
- Keywords CSI catalyst;Melt index;Hydrogen regulation performances; 型催化剂;熔体指数;氢调性能;
- Water contains hydrogen and oxygen. 水含有氢和氧。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- It's wrong of you to get around the regulation. 你存心规避规章制度是不对的。
- This regulation refers only to children. 这些规定仅适用于儿童。
- Water is composed of the elements hydrogen and oxygen. 水是由氢元素和氧元素组成的。
- The minors are excepted from the regulation. 未成年者不在此限。
- That regulation is not applicable to this case. 那条规定不适用于这一情况。
- Water may be resolved into hydrogen and oxygen. 水可以分解为氢和氧。
- He was fined200 dollars for violation of traffic regulation. 他因违反交通规则被罚款200美元。
- A regulation that has outlived its usefulness. 已经没用却仍然存在的规则
- The hydrogen is the known the lightest element. 氢是已知的最轻的元素。
- The convocation held at four o'clock had passed a regulation. 四点举行的会议通过了一项规章制度。
- Hydrogen and oxygen combine/Hydrogen combines with oxygen to form water. 氢与氧化合成水。
- A molecule of water consists of two atoms of hydrogen and one atom of oxygen. 水分子含有两个氢原子和一个氧原子。
- She was fined for driving above the regulation speed. 她因超速开车而被罚款。
- Water can be dissolved into hydrogen and oxygen. 水能分解成氢和氧。