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- Keywords 2;3;5 - trimethylpyrazine;biacetyl;propylene diamine;synthesis; 三甲基吡嗪;合成;丁二酮;丙二胺;
- propylene diamine 丙二胺
- alkyl propylene diamine 烷基丙烯二胺
- PN Philippine Aero Transport Inc. 菲律賓航空運輸公司。
- Methylpyrazine has been synthesized by gas-solid contact catalysis of ethylene diamine with propylene oxide in fixed-bed reactor. 本文研究了以乙二胺和環(huán)氧丙烷為原料,經(jīng)氣固相接觸催化合成2-甲基吡嗪的新工藝。
- Many small fi wrms went under in that depressi pn. 在那次經(jīng)濟蕭條中，許多小企業(yè)破了產(chǎn)。
- Not like last year, this year, Pn. 可是很出乎意料的！
- Pn: Act out the dialogue in pairs. 通過(guò)學(xué)生結對表演課文對話(huà),熟悉句型和課文。
- Water, Propylene Glycol Dicaprylate/ ... 恩，就是那個(gè)牛油果。
- Na5 Ethylene Diamine Tetra (Methylene Phos... 摘要:乙二胺四甲叉膦酸五鈉 EDTMP?
- Adds "PN" to the beginning of each specified part number. 將“PN”添加到每個(gè)指定商品編號的開(kāi)頭。
- Study on overlapping principle of PN junction in nonlinear zone of. 光電池非線(xiàn)性區PN結光生伏特效應的研究。
- Vegan. Paraben, SLS, Propylene Glycol Free &Hypoallergenic. 素食，不含帕拉膠，SLS，丙二醇，低變應原。
- DR was little changed under above -1.6MPa which decreased Pn. _w 為-1.;6MPa 以上;DR 變化不大;
- Vegetarian. Paraben, Propylene Glycol and Gluten-Free. 素食，不含帕拉膠，丙二醇，麩質(zhì)。
- A new correlation which predicts propylene yield is presented. 介紹一個(gè)新的預測丙烯產(chǎn)率的關(guān)聯(lián)式。
- Nitrogen balance was better in EN group than that in PN group. 術(shù)后第3天起，兩組間每日氮平衡和累計氮平衡均有差異顯著(zhù)(P<0.;05，P<0
- Objective To study the function of the VIP in pathogenesis of PN. 目的了解血管活性腸肽(VIP)在結節性癢疹(PN)發(fā)病中的作用。
- Fourteen cases of PGS recieved the combination of PN with EN. 結果:治療1周內兩組平均陽(yáng)性率無(wú)顯著(zhù)性差異,1周后腸外營(yíng)養組平均陽(yáng)性率高達62。
- At last, the paper also discusses the pragmatic effects of PN. 這一章還對語(yǔ)用否定的語(yǔ)用效果進(jìn)行了分析。
