• 酸性催化剂下,葡萄糖乙二醇经缩醛化反应制备了乙二醇葡糖苷

    Glycol glucoside was prepared from glucose and ethylene glycol in the presence of acid catalyst.

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  • 磷酸催化下,葡萄糖乙二醇经缩化反应制备了乙二醇葡糖苷,可用化妆品保湿剂。

    Ethylene glycol glycosides, useful as humectant in cosmetics, were prepared by phosphoric acid-catalyzed acetalization of glucose with ethylene glycol.

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  • 叙述了聚乙烯醇为原料,经缩化后硅溶胶制备有机—无机复合粘合剂介绍了配方、制备程序拉伸粘结强度试验结果。

    The paper introduces the formula, process and tensile strength of the organic-inorganic composite adhesive which is prepared by mixing acetalization of polyvinyl alcohol with silicasol.

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  • 记者马超彦李智本周首个交易日市场便投资者了个下马威”,上证指数不仅大跌72出现了明显量。

    The first trading day this week, the market will be for investors to the "Xia Mawei," Shanghai Composite Index dropped only 72 points, also marked appeared Su Liang.

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  • 泡泡纱泡泡牢度树脂整理后,泡泡牢度有所提高。

    The seersucker bubbles of contracting of alkali are relatively poor in fastness, after resin finishing, the fastness of bubble is improved to some extent.

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  • 双壁涂套管DRS-DW聚烯烃材料热熔联合挤出特殊加工制成。

    Double wall adhesive heat shrink tube DRS-DW, the polyolefin material and a special hot melt extrusion processed jointly.

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  • 同等测试条件下锥形最大其次普通筛孔的脉,最小的锥形筛孔的脉。

    Under the same experiment conditions, the shrunk stream diameter of upper taper sieve trays is maximum, common sieve trays' is second, and lower taper sieve trays' is minimum.

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  • 目的研究宫素离体胎盘绒毛叶转运血低蛋白血症胎儿血酸血症转运的影响

    Objective to study the transfer of oxytocin across the single cotyledon of the term human placenta and the effects of maternal hypoproteinemia and fetal acidemia on the transfer.

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  • 测试,亚麻织物弹性伸长率均满足设计要求

    The test shows that the elastic elongation and weaving defects of pure flax weft elastic fabric can satisfy the design demands.

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  • 批量生产验证铸件松缺陷,表面无渣气孔缺陷,工艺出品率81%。

    Batch production shows there are no shrinkage cavity and porosity in casting, and no blowholes and sand inclusions on the top surface. The yield of the casting is 81%.

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  • 蛋氨酸为原料还原脱硫甲基化、酯化氨解酰胺化分子成环4步反应合成得到了左乙拉西坦,收率44.6%。

    Levetiracetam was prepared from L-methionine via reduction-dethiomethylation, esterification, ammonolysis, amidation and intramolecular cyclocondensation reaction with 44.6% overall yield.

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  • 方法:以氨基乙醛甲醇制备的N2 ,2二甲氧基乙基)硫酸盐盐酸催化环合制2 氨基咪唑硫酸盐。

    METHODS:N (2,2 dimethoxylethyl)guanidine sulfate from aminoacetaldehyde dimethyl acetal was treated with concentrated HCl to get 2 aminoimidazole sulfate.

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  • 公司主要生产蚂蚁蚂蚁丝绒KS布,印花布网眼布,珊瑚绒,丝光绒,以及各种玩具绒,沙发面料

    This company mainly produces ant cloth, velvet ants, velvet shrinkage, KS cloth, printed cloth warp, mesh cloth, coral velvet, mercerized velvet, and a variety of toys velvet, sofa fabric and so on.

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  • 采用有机硅树脂精纺纯毛织物进行防整理,整理织物面积毡率、向和纬向都达到“机可洗标准其他各项性能指标都较好

    After finished with silicone resin, the anti felt shrinkage and warp and wept shrinkage of 100% wool worsted fabric could be kept in "machine washable" standards with other feature index excellent.

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  • 上述截面管子抛光涂层弯曲攻丝钻孔口、成锥形法兰颈圈套环

    Tubes and pipes of the foregoing cross-sections may be polished, coated, bent, threaded, drilled, waisted, expanded, cone-shaped or fitted with flanges, collars or rings.

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  • 瓦楞形状国际通用UV形,精心设计,压制出的纸板质量好,强度

    UV type is selected for corrugated rollers, which are elaborately designed with lower take up ratio and high cardboard intensity.

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  • 瓦楞形状国际通用UV形,精心设计,压制出的纸板质量好,强度

    UV type is selected for corrugated rollers, which are elaborately designed with lower take up ratio and high cardboard intensity.

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