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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譜法同時(shí)測定農藥吡蟲(chóng)啉中間體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)對硝酸酯和聚氨酯粘結劑均具有良好的穩定作用。
- The yield and purity of tricyclazole were increased when it was synthesised from water washed and dried 2 hydrazino 4 methyl benzothiazole. 通過(guò)對2肼基4甲基苯駢噻唑的水洗干燥處理后合成三環(huán)唑,來(lái)提高三環(huán)唑含量和合成收率。
- Study on interaction between human albumin and 3-amino methyl pyridine 人白蛋白與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. 這家醫院的探望時(shí)間是從4點(diǎn)到6點(diǎn)。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4點(diǎn)25分吧。
- FREE RADICAL OLIGOMERIZATION OF STYRENE WITH 2,4 DIPHENYL 4 METHYL 1 PENTENE AS CHAIN TRANSFER AGENT 陳涓, 以2,4-二苯基-4-甲基-1-戊烯為鏈轉移劑的苯乙烯自由基聚合
- A monthly is more economical than 4 weeklies. 一張月票比四張周票上算。
- He is remanded on his own recognizance of$4,000. 在保證付款4,000美元后他被還押(以后再出庭)。
- The doors were numbered 2,4, 6 and 8. 這些門(mén)編為2、 4、 6、 8號。
- We were routed out of our beds at 4 am. 清晨 4 點(diǎn)鐘就把我們從床上叫起來(lái)了。
- The next postal delivery is at 4 o'clock. 下一次郵遞時(shí)間是四點(diǎn)鐘。
- Keywords sodium bis（4 methyl 2 pentyl） sulfosuccinate;anionic surfactant;esterification;sulfonation; 磺基琥珀酸二（4甲基2戊酯）磺酸鈉;陰離子表面活性劑;酯化;磺化;
- He was said to have salted away $4 million. 據說(shuō)他已積蓄了四百萬(wàn)美元。
- Subtract 3 from 7 and you have 4. 七減三得四。
- The champion is running in lane 4. 冠軍跑在第四跑道上。
- We can't get Channel 4 on our television. 我們的電視機收看不到第4頻道的節目。
- Our flight is boarding at gate number 4. 我們的航班在四號門(mén)登機。
- Unemployment declined to 4 percent last month. 上個(gè)月失業(yè)率降至百分之四。
