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- naphthamine fast black 萘胺坚牢黑
- A method of recovering black colour base and synthesizing benzo fast black G dye from barium dregs has been developed. 提出了从钡渣中回收黑色基并合成直接耐晒黑G染料的方法。
- The yield of benzo fast black G dye reached 2.56% of barium dregs and the product quality could meet the standard of HG9336-88. 直接耐晒黑G染料的得率达到钡渣量的2．56%25，产品质量达到HG9336-88标准。
- Keywords barium dregs;benzo fast black G dye;recovery.; 钡渣;直接耐晒黑G染料;回收利用;
- He was in black from crew to earing. 他全身上下都穿着黑衣服。
- He worked very fast, insomuch that he was through in an hour. 他工作得很快，一小时内便做完了。
- He's not a fast horse but he's certainly a stayer. 这匹马跑得不快，但很有耐力。
- He whipped up a pistol and shot at the black bear. 他急忙抓起手枪，向那头黑熊射击。
- Many people were taken off by the Black Plague. 许多人被黑死病夺去了生命。
- Bind the rope fast lest it should come loose. 把绳子绑牢，免得它松脱。
- The man is carrying a small black plastic handbag. 这个人提着一个黑色的小塑料提袋。
- Bill has a feeling he is on a fast track. 比尔感觉到他正快速迈向成功。
- The old trade in black ivory is on more. 昔日非洲黑奴的买卖已不复存。
- The black sedan suddenly drew out into the traffic. 黑色轿车突然开动，驶进了车流。
- I have a snag in my best black tights. 我最好的一条黑裤袜给划破了。
- A car journey is as fast as a train journey. 乘汽车旅行跟乘火车旅行一样快。
- He fell down the stairs and was all black and blue. 他从楼梯跌下而青一块紫一块了。
- A car overtook me although I was going very fast. 我虽然开得很快，还是被一辆汽车超前了。
- I must be at Hudson before I break my fast. 吃早饭之前，我肯定已到哈得逊区。
- Black and white show a striking contrast. 黑和白形成明显的对比。
