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- The VPI-5 molecular sieve with 18-membered rings was synthesized by using dibutylamine(DBA) as the structural directing agent. 以二正丁胺(DBA)为结构导向剂;合成了含18元环的VPI-5分子筛.
- Mesoporous MSU silica molecular sieves and its Ti, Zr, and V derivatives have been prepared under the iso electric point of silica (pH=2), using polyoxoethylene (10) stearyl ether as a structure directing agent. 以十八烷基聚氧乙烯基醚为模板剂 ;在 Si O2 的等电点 (p H值为 2 )下 ;成功地合成了具有 MSU结构的中孔 Si O2 分子筛及其 Ti、 Zr和 V取代衍生物 .
- The controlling step of the ageing reaction for the directing agent of zeolite L is directional polymerization between aluminosilicate oligomers or betw... 沸石导向剂陈化反应的控制步骤是低聚态硅铝酸根离子之间或低聚态硅铝酸根离子与低聚态硅酸根离子之间的定向聚合反应。
- Flytrans as one of the biggest direct agents of the famous worldwide express couriers,offers the highquality,speediness and safety services to you. 翔展作为国际品牌快递公司的一级代理，为客户提供优质、快速、安全的服务，感觉犹如亲自递送。
- Synthesis of NaY zeolite with liquid-phase directing agent 液相导向剂法合成高硅NaY型沸石
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- He has chosen the most direct route. 他选取了最直的路线。
- She's very direct, believes in speaking her mind. 她为人直率，喜欢有什么说什么。
- Can you direct me to the shoe department? 请告诉我卖鞋部在哪里。
- Be there a direct train for Beijing to Nanning? 从北京到南宁有直达车吗？
- See that direct heat does not play on it. 当心别让它直接受热。
- It's a long way by road the train is more direct. 走公路很远--乘火车近。
- Would you please direct me to the zoo? 请问去动物园怎么走?
- My eyes were blinded by the direct rays of light. 在光线的直射下，我看不清楚东西。
- Her opinions are the direct opposite of mine. 她的意见与我的截然相反。
- She is in direct contact with the general manager. 她与总经理直接联系。
- I'm in direct contact with the hijackers. 机者保持著直接的联系。
- The army is under the king's direct command. 军队由国王直接统率。
- Give me a direct answer, and stop evade the issue. 给我一个直截了当的回答，不要回避这一问题。
