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- A method was established for determining two intermediates in synthesis of imidacloprid,2 chloro 5 methyl pyridine and 2 chloro 5 chloromethyl pyridine by HPLC. 建立了用高效液相色谱法同时测定农药吡虫啉中间体2-氯-5-甲基吡啶和2-氯-5-氯甲基吡啶含量的方法。
- Good results have been obtained for both polyether urethane and nitrate esters when using 2,6 di t butyl 4 methyl phenol(BHT) as stabilizer. 2 ,6-二叔丁基 - 4 -甲基酚 (BHT)对硝酸酯和聚氨酯粘结剂均具有良好的稳定作用。
- The yield and purity of tricyclazole were increased when it was synthesised from water washed and dried 2 hydrazino 4 methyl benzothiazole. 通过对2肼基4甲基苯骈噻唑的水洗干燥处理后合成三环唑,来提高三环唑含量和合成收率。
- Study on interaction between human albumin and 3-amino methyl pyridine 人白蛋白与3-氨甲基吡啶相互作用的研究
- methyl pyridine 甲基吡啶2-
- Visiting time in this hospital is from 4 to 6. 这家医院的探望时间是从4点到6点。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4点25分吧。
- FREE RADICAL OLIGOMERIZATION OF STYRENE WITH 2,4 DIPHENYL 4 METHYL 1 PENTENE AS CHAIN TRANSFER AGENT 陈涓, 以2,4-二苯基-4-甲基-1-戊烯为链转移剂的苯乙烯自由基聚合
- A monthly is more economical than 4 weeklies. 一张月票比四张周票上算。
- He is remanded on his own recognizance of$4,000. 在保证付款4,000美元后他被还押(以后再出庭)。
- The doors were numbered 2,4, 6 and 8. 这些门编为2、 4、 6、 8号。
- We were routed out of our beds at 4 am. 清晨 4 点钟就把我们从床上叫起来了。
- The next postal delivery is at 4 o'clock. 下一次邮递时间是四点钟。
- Keywords sodium bis（4 methyl 2 pentyl） sulfosuccinate;anionic surfactant;esterification;sulfonation; 磺基琥珀酸二（4甲基2戊酯）磺酸钠;阴离子表面活性剂;酯化;磺化;
- He was said to have salted away $4 million. 据说他已积蓄了四百万美元。
- Subtract 3 from 7 and you have 4. 七减三得四。
- The champion is running in lane 4. 冠军跑在第四跑道上。
- We can't get Channel 4 on our television. 我们的电视机收看不到第4频道的节目。
- Our flight is boarding at gate number 4. 我们的航班在四号门登机。
- Unemployment declined to 4 percent last month. 上个月失业率降至百分之四。
