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- The products are polyethers synthesized with new catalyst, characterized by low unsaturation, narrow molecular weight distribution, high activity and high primary hydroxyl content. 本产品系新型催化剂合成的聚醚，其特点是不饱和度低，分子量分布窄，活性高，伯羟基含量高。
- The Oxidation of Primary Hydroxyl Group of Galactose and the Synthesis of Its Derivatives 半乳糖伯羟基氧化及其衍生物的合成
- Increase of Content of Primary Hydroxyl Groups of Polyether Polyols with Low Unsaturation 低不饱和度聚醚多元醇伯羟基含量的提高
- Test Methods for Polyurethane Raw Materials: Determination of Primary Hydroxyl Content of Polyether Polyols 聚氨基甲酸乙酯原料的试验方法:聚醚多醇的原羟基含量的测定
- Standard Test Methods for Polyurethane Raw Materials Determination of Primary Hydroxyl Content of Polyether Polyols 聚氯基甲酸乙酯原料的试验方法:聚醚多元醇的原羟基含量的测定
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- Keywords polyether polyol;low unsaturation;high molecular weight;high reactivity;primary hydroxyl group; 聚醚多元醇;低不饱和度;高相对分子质量;高活性;伯羟基;
- The Measurement of the Ratio of Primary Hydroxyl Group to Second Hydroxyl Group in Polyether Polyol by Near Infrared Spectrum 近红外光谱法检测聚醚多元醇伯羟基与仲羟基的相对含量
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
- Not derived from something else; primary or basic. 基本的不是从它物派生的; 原本的或基本的
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
