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- A series of high hardness polyurethane elastomers based on polyoxypropylene polyol, diol chain-extender and polyisocyanate were prepared by one-step process. 采用聚氧化丙烯多元醇、二醇扩链剂和多异氰酸酯为原料,用一步法工艺制得一系列高硬度聚氨酯弹性体。
- HARD POLYURETHANE FOAM PLASTIC APPLIED TO ROOFING WATERPROOF WORK 硬质聚氨酯泡沫塑料在屋面防水工程中的应用
- Spraying and Insulating Construction of Hard Polyurethane Polyfoam 聚氨酯硬质泡沫塑料喷涂保温的施工
- high temperature resistance and hard polyurethane foam plastics 耐高温硬质聚氨酯泡沫塑料
- It is hard to sleep without a cooler in this room. 没有空气调节器,在这间屋里很难入睡。
- Hard Polyurethane Expandable Plastics Foam-Spouting Forming of Complex Surface 复杂型面上的硬质聚胺酯泡沫塑料喷泡成型工艺
- Preparation of High Hardness Polyurethane Elastomer 高硬度聚氨酯弹性体研制
- John felt it hard to rig out his family. 约翰感到难以为一家大小置备衣着。
- The hard core in the party make all the decisions. 这个党的核心成员决定一切。
- Hard copy is computer output on paper, printing or graphics. 硬拷贝是出现在纸上、印刷上或图表上的电脑输出。
- I scrubbed hard at the stain to see if I could get it off. 我使劲擦这个污迹,看能不能将它去掉。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- He pushed hard on the brake pedal to avoid a collision. 他使劲踩下煞车踏板以避免撞车。
- One can not learn a language well unless one works hard. 学好一种语言非下苦功不可。
- Let's collect the sap before its consolidation into a hard mass. 让我们在树液坚固成团之前将之收集起来。
- He owes his opulence to work hard. 他的财富乃辛勤工作得来。
- She was trying hard to disgorge a fish bone. 她拚命想把鱼刺吐出来。
- The emery is a hard metallic substance. 金刚砂是非常坚硬的金属物质。
- Hard training will fit them to run long distances. 严格的训练将使他们能跑长距离。
- Preparation of PPG Type High Hardness Polyurethane Elastomer 聚醚型高硬度聚氨酯弹性体的研制