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- Ultraviolet absorber UV-284 (2-hydroxy-4-methoxy diphenyl ketone 5 sulfonic acid)is obtained by synthesis from 2-hydroxy -4-methoxy diphenyl ketone,and its yellowing-resistant property on silks is investigated. 以2-羟基-4-甲氧基二苯甲酮为原料,合成了2-羟基-4-甲氧基二苯酮5-磺酸,即紫外线吸收剂uv-284。
- Analysis Method of Trace Methyl Iso Butyl Ketone in Solution 溶液中微量甲基异丁基酮的分析方法
- methyl butyl ketone 甲基丁基酮,2-已酮
- hyl butyl ketone,3-heptanone 乙基丁基甲酮
- Or ketone of Nuo of the different that take alkyne or alkyne Nuo ketone 5 milligram, daily 1; 或服炔异诺酮或炔诺酮5毫克,每日1次;
- ethyl butyl ketone,3-heptanone 乙基丁基甲酮
- These fish vary in weight from 3 lb to 5 lb. 这些鱼的重量从3磅到5磅不等。
- butyl ketone 5-壬酮
- The going rate for freelance work is 5 an hour. 自由职业者的现行酬金是每小时5英镑。
- methyl butyl ketone(2-hexanone) 甲基丁酮
- Many children under 5 go to nursery school. 5岁以下的许多儿童都上幼儿园。
- Meals average out at 5 per head. 膳食平均每人5英镑。
- Children under 5 can travel for nothing. 5岁以下儿童可免付旅费。
- butyl ketone 5- 壬酮
- Even the cheapest was priced at 5. 即使最便宜的也标价5英镑。
- The liquid was 5 litres in volume. 该液体的体积为5升。
- ethyl butyl ketone 乙基丁酮
- The ratios of 1 to 5 and 20 to 100 are the same. 1与5之比和20与100之比相同。
- The winning time was 1 minute 5 seconds. 获胜的时间是1分零5秒。
- I found a 5 note on the pavement. 我在人行道上捡到了一张5英镑的纸币。