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- Unsaturated polyphosphoester (UPPE) containing unsaturated double bonds in main chain was synthesized with fumaric acid, 1,2-propylene glycol and phosphorous oxychloride as the initiation materials. 摘要以富马酸和三氯氧磷为起始原料，合成了主链重复结构单元中含不饱和双健的聚磷酸酯。
- Second method, p-fluoro aniline and chloroacetic chloride chloroacetyl chloride were used as initial materials and alkylation was carried out. 方法二以对氟苯胺和氯乙酰氯为起始原料，然后进行烷基化成环。
- Eight flavones were synthesized through acetylation、methoxyl protection、aldol condensation and closing ring used 1,3,5-trihydroxylbenzene and resorcin as the initial materials. 以间苯二酚和间苯三酚为原料,经乙酰化、甲氧基保护、羟醛缩合、关环4步反应合成了8种黄酮。
- Using isovanillin and tyramine as the initial materials,racemic galanthamine was prepared in five steps including bromination,condensation and reduction,formylation, oxidation coupling and reduction. 以异香草醛和酪胺为主要原料,经溴化、缩合还原、甲酰化、氧化偶合及还原五步反应,合成了外消旋加兰他敏。
- Many natural materials are becoming scarce. 许多天然原料越来越少。
- The beautiful curtain is made of remnant materials. 这个漂亮的窗帘是用零头布做的。
- Six novel azobenzene derivatives were prepared by several synthetic steps using acetylaniline as initial material. 以乙酰苯胺为原料,经氯磺化、氨解、重氮化和偶联反应,合成了8个偶氮苯类化合物;
- Some synthetic materials do not crush easily. 有些化纤衣料不易起皱。
- Everything we used was made from natural materials. 我们所用的一切都是由天然材料做成的。
- He buys the materials wholesale. 他成批地购买原材料。
- He is collecting materials for a book. 他正在为写书搜集素材。
- Building materials are expensive. 建筑材料很昂贵。
- A bin for storing ore, grain, or other materials. 仓库储放矿石、谷物或其它材料的大箱
- One who prepares candidates for initiation into a mystery cult. 引人入秘教者为加入神秘教会的教徒准备候选人的人
- He is gathering materials for a new book. 他正在收集资料准备写一本新书。
- Environmentalists are keen on degradable materials. 环保分子特别喜爱能够自然分解的材料。
- Recycled materials are mostly of limited use. 再生材料大多用途有限。
- Based on the above background, the rice hull which was cooked first was used as initial material and, then lignin/SiO2 composite was prepared primary coprecipitation at hydrothermal condition. 本论文基于上述背景，以稻壳为原料，先蒸煮稻壳，然后在水热条件下采取共沉淀法原位制备木质素/SiO2复合材料。
- All the raw materials are imported. 所有原料都是进口的。
- You are to tell NO-ONE about this initiation. “你要对这次入会仪式一字不提。
