硅胶
- 与 硅胶 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 alternative use of buffered silica gel resulted in modest hydrolysis (~5-10%) of the imine.
选用温和的水解导致缓冲硅胶(~5-10%)的亚胺。
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It has no reaction to chemistry of the body, 100% silicone toys are completely inert.
它没有到身体的化学反应,100%硅胶玩具是完全惰性。
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Where is one of factory to make silicone insole.
如果是工厂,使硅胶鞋垫。
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Fast analysis of perchlorate was carried out by ion-pair chromatography using a silica-based monolithic column and direct conductivity detection.
研究了用硅胶整体柱和直接电导检测的离子对色谱快速分析高氯酸盐的方法。
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An ion-pair chromatographic method for the determination of Cr has been developed using a silica-based monolithic column and a conductivity detector.
研究了基于硅胶整体柱的离子对色谱快速测定Cr的方法,讨论了淋洗液浓度、乙腈浓度、流速、温度和pH等因素对分离的影响。
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Hydrocarbon structural-group components in the hydrotreating of residual oils The residual oils were preseparated into 4 fractions by alumina/silica serial column A method for measuring the hydrocarbon structural-group components in saturated fraction, aromatic fraction, and resin fraction of residual oils was established using low resolution, high ionization voltage mass spectroscopy.
渣油加氢处理过程烃类结构族组成变化研究采用氧化铝/硅胶串联柱对渣油样品进行四组分预分离,建立了低分辨、高离子化电压质谱测定渣油饱和烃、芳烃和胶质组分烃类结构族组成的方法。
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Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.
研究结果表明:氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代-β-紫罗兰酮和5,6-环氧-β-紫罗兰酮,经重结晶和硅胶柱层析分离,纯度高于98%;4-氧代-β-紫罗兰酮的有利合成条件是反应温度为45℃,反应时间为24h,溶液的pH值为1~3,反应物配比n:n(NaClO3):n为20:100:3,最佳收率为53.5%;5,6-环氧-β-紫罗兰酮有利的合成条件是反应温度为40℃,反应时间为24h,溶液的pH值为3,反应物配比n:n(NaClO3):n为20:120:5,其收率为25.4%;未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。
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KL-SRF, woven as sleeving by the high glass fiber or special non-alkali glass fibers and coated with a thick cover of the iron oxide red / blue silicone, it can stop the melting iron splash and high-temperature and flames. It has a fire-retardant ,insulation, thermal insulation and anti-electricity.these features make it applicable to the protection of the cable and pipeline under the bad environment .
防火耐高温套管以高膨松性玻璃纤维或者特殊无碱玻璃纤维编织套管所制成,并覆以厚实的氧化铁红/蓝硅胶,其能阻挡熔铁喷溅,且不受高温和火焰所损坏,具有阻燃、隔热、保温、抗电、柔软等性能,这些特性使其适用于保护恶劣环境下的软管、缆线和管路。
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An orange-red crystalline substance was isolated from the chloroform extract of red callusdry powder by silica column chr
从干燥的红色愈伤组织中,用氯仿提取、硅胶柱层分离到一种橙红色结晶,经鉴定为隐丹酮。
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Shenzhen, Jardine Fleming is a professional engaged in soft, silicon products development, synthesis, production and sale of factories.
深圳市怡富是专业从事软胶、硅胶制品的开发、合成、生产和销售的工厂。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。