在酸性催化剂下,由葡萄糖和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.
在磷酸催化下,由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷,可用作化妆品保湿剂。
Ethylene glycol glycosides, useful as humectant in cosmetics, were prepared by phosphoric acid-catalyzed acetalization of glucose with ethylene glycol.
叙述了以聚乙烯醇为原料,经缩醛化后和硅溶胶制备有机—无机复合粘合剂。介绍了配方、制备程序和拉伸粘结强度的试验结果。
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.
每经记者马超彦李智本周首个交易日,市场便给投资者来了个“下马威”,上证指数不仅大跌72点,还出现了明显的缩量。
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.
碱缩泡泡纱泡泡牢度较差,经树脂整理后,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.
双壁涂胶热缩套管DRS-DW由聚烯烃材料及热熔胶联合挤出经特殊加工制成。
Double wall adhesive heat shrink tube DRS-DW, the polyolefin material and a special hot melt extrusion processed jointly.
在同等测试条件下,经过上锥形筛孔的缩脉最大,其次是经普通筛孔的缩脉,最小的缩脉为经下锥形筛孔的缩脉。
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.
目的研究缩宫素经离体人胎盘绒毛叶的转运及母血低蛋白血症和胎儿血酸血症对转运的影响。
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.
经测试,纯亚麻纬弹织物的弹性伸长、织缩率均满足设计要求。
The test shows that the elastic elongation and weaving defects of pure flax weft elastic fabric can satisfy the design demands.
经批量生产验证,铸件内无缩孔、缩松缺陷,上表面无渣孔、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%.
以蛋氨酸为原料经还原脱硫甲基化、酯化、氨解、酰胺化及分子内缩和成环4步反应合成得到了左乙拉西坦,总收率44.6%。
Levetiracetam was prepared from L-methionine via reduction-dethiomethylation, esterification, ammonolysis, amidation and intramolecular cyclocondensation reaction with 44.6% overall yield.
方法:以氨基乙醛缩甲醇制备的N (2 ,2二甲氧基乙基)胍硫酸盐经盐酸催化环合制得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.
本公司主要生产蚂蚁布,蚂蚁绒,缩丝绒,KS布,经编印花布,网眼布,珊瑚绒,丝光绒,以及各种玩具绒,沙发面料等。
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.
采用有机硅树脂对精纺纯毛织物进行防毡缩整理,整理后的织物面积毡缩率、经向和纬向收缩率都达到“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.
上述截面的管子可经抛光、涂层、弯曲、攻丝、钻孔、缩腰、胀口、成锥形或装法兰、颈圈或套环。
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.
瓦楞形状为国际通用UV形,经精心设计,缩纸率低,压制出的纸板质量好,强度高。
UV type is selected for corrugated rollers, which are elaborately designed with lower take up ratio and high cardboard intensity.
瓦楞形状为国际通用UV形,经精心设计,缩纸率低,压制出的纸板质量好,强度高。
UV type is selected for corrugated rollers, which are elaborately designed with lower take up ratio and high cardboard intensity.
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