酸性类
- 与 酸性类 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The appearance of smectite suggests that it enriched in magnesium, but no strong eluviation, which belongs to cold and arid acid environment. 5 Three soil sites have different moisture.
水云母类矿物处于风化的初级阶段,蒙皂石的出现,反映了本地区富含镁元素,是没有强烈淋溶、寒冷干旱的弱酸性环境。
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Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.
2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下,起亲核加成反应,反应中间体5在室温用酸性丙酮水解,得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物,产率56%、通过制备薄层层析分得这四个立体异构体,它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似,推定了它们的绝对构型。
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Acid or granitic glass; usually dark, but transparent in thin pieces.
酸性或花岗石类玻璃,通常为黑色,但片状时透明。
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Mr Zhang, I would suggest that starting from now you reduce your intake of the acidic meaty
张先生我建议你从现在起少吃酸性的荤食类
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Mr Zhang, I would suggest that starting from now you reduce your intake of the cidic meaty dishes.
张先生我建议你从现在起少吃酸性的荤食类
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Mr Zhang, I would suggest that starting from now you reduce your intake of theacidic meaty dishes.
张先生我建议你从现在起少吃酸性的荤食类
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Mr Zhang, I would suggest that starting from now you reduce your intake of the acidic meaty dishes..
张先生我建议你从现在起少吃酸性的荤食类
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DFerric Perchloric acid method was used to determine the content of ester-series alkaloid, and acid dye colorimetry was used to determine the content of total alkaloid in Complex Prescription Monkshood plaster.
方法分别采用改良异羟肟酸铁-高氯酸铁法及酸性染料比色法测定制剂中的酯型生物碱及乌头类总生物碱的含量。
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MethodsFerric Hydroxamic acid―Ferric Perchloric acid method was used to determine the content of ester-series alkaloid, and acid dye colorimetry was used to determine the content of total alkaloid in Complex Prescription Monkshood plaster.
方法分别采用改良异羟肟酸铁-高氯酸铁法及酸性染料比色法测定制剂中的酯型生物碱及乌头类总生物碱的含量。
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aim:to investigate the correlations between plasma levels of tryptase, interleukin 8 (il 8), interleukin 12 (il 12) and eotaxin in the patients with grass pollinosis in summer and autumn and their clinical significances.
目的:检测夏秋季花粉症患者血浆类胰蛋白酶, il 8,il 12和嗜酸性粒细胞趋化因子水平,探讨其临床意义。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。