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- Synthesize poly(amic acid) by s-BPDA and 4,4'-ODA at 1:1(mol ratio ) in DMAC. 本論文中我們合成了苯胺齊聚物-聚酰亞胺梯度漸變的膜材料，并對其進(jìn)行了表征：（1）以DMAC為溶劑，以摩爾比為1：1的s-BPDA和4,4’-ODA合成聚酰胺酸。
- Keywords sulphonated polystyrene;poly（4 vinyl pyridine）;micelle like particles; 磺化聚苯乙烯;聚4-乙烯基吡啶;膠束狀粒子;
- The score in the football game was 4 - 1. 足球比賽的比分是四比一。
- They won the game by a score of 4 to 1. 他們以4比1的比分獲勝。
- Visiting time in this hospital is from 4 to 6. 這家醫院的探望時(shí)間是從4點(diǎn)到6點(diǎn)。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4點(diǎn)25分吧。
- The home team defeated the visiting team 4 to 1. 主隊以4比1的比分擊敗了客隊。
- A monthly is more economical than 4 weeklies. 一張月票比四張周票上算。
- He is remanded on his own recognizance of$4,000. 在保證付款4,000美元后他被還押(以后再出庭)。
- The doors were numbered 2,4, 6 and 8. 這些門(mén)編為2、 4、 6、 8號。
- We were routed out of our beds at 4 am. 清晨 4 點(diǎn)鐘就把我們從床上叫起來(lái)了。
- The next postal delivery is at 4 o'clock. 下一次郵遞時(shí)間是四點(diǎn)鐘。
- He was said to have salted away $4 million. 據說(shuō)他已積蓄了四百萬(wàn)美元。
- Subtract 3 from 7 and you have 4. 七減三得四。
- Poly(PEG(1)-adipic anhydride(2)) was synthesized by melt polycondensation. 采用熔融縮聚法合成了PEG(1)-己二酸酐(2)聚合物。
- The champion is running in lane 4. 冠軍跑在第四跑道上。
- We can't get Channel 4 on our television. 我們的電視機收看不到第4頻道的節目。
- Our flight is boarding at gate number 4. 我們的航班在四號門(mén)登機。
- Beijing Poly International Auction Co., Ltd. 北京保利國際拍賣(mài)有限公司。
- Unemployment declined to 4 percent last month. 上個(gè)月失業(yè)率降至百分之四。
