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- Induction period, embrittlement time, molecular weight and tensile strength of photo biodegradable PE film which contain various photo sensitizer systems are studied. 研究了含有不同光降解剂体系的光-生物降解聚乙烯（PE）膜在氙灯辐照下诱导期、脆化时间、分子量及力学性能等的变化规律。
- Low esterified degree corn starch acetates(DS<0.2),was synthesized from corn starch reacting with acetic acid/acetic anhydride.At the same time,SA/PVA biodegradable films was gained by crossing. 制备了低酯化度玉米淀粉醋酸酯(SA)(DS<0.;2)/聚乙烯醇(PVA)可降解复合膜;重点讨论了交联剂的种类、用量、交联反应温度及时间对复合膜力学性能和耐水性的影响。
- Keywords zein;biodegradable film;plasticization;modification; 玉米醇溶蛋白;生物可降解膜;增塑;改性;
- That was infinitely better than his last film. 这比他上一部电影不知胜过多少倍。
- Keep the sun behind you when you take a photo. 拍照时要让太阳留在你的身后。
- He showed me a photo of a family group. 他给我看一张合家欢的照片。
- Many a time have we come across this same photo. 我们多次都见到过这同一张照片。
- He adjusted the shutter before taking a photo. 在照相前，他调整了快门。
- The woman on the photo is my paternal grandmother. 照片上的这个妇人是我祖母。
- He took a lot of photo last sunday, and so do I. 他上星期照了许多照片，我也一样。
- She has a book full of cuttings about her film. 她有一本书贴满了关于她的一些影片的剪报。
- The photo made him quite attractive. 照片把他拍得相当英俊。
- She loves old Humphrey Bogard films. 我非常喜欢老演员亨弗莱鲍嘉主演的电影。
- That photo is a good likeness of David. 戴维那张相片照得很像。
- He has composed a suite of music for the film. 他为该电影配写了一套乐曲。
- He hit upon a photo taken ten years ago. 他偶然发现一张十年前拍的照片。
- The photo shows her dressed in black. 在这张照片里，她穿著黑衣服。
- That film creates an atmosphere of menace. 那部影片营造出吓人的气氛。
- In his last film he starred as a cowboy. 他在最近的一部影片中主演一位牛仔。
- I got her in focus before I took the photo. 我在拍摄前先用镜头把她对清楚。
