The invention discloses a catalytic asymmetric hydrogenation reaction. Of the present invention is the role of chiral catalyst, H2 of the prochiral unsaturated compounds to addition reaction to obtain the chiral product, wherein the solvent used in the reaction liquid polyethylene glycol compound. T.....
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Disclosed is an extendible emergency bump guard post arranged underground comprising a base with open top, a post placed in the base not in use and in vertical place in use and a protecting hood movably connected with one end of the base, wherein when the post is located in the vertical or horizonta.....
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公开了一种腕骨骨折复位和固定装置，其包括：贴靠着使用者的前臂掌侧的前臂掌侧板（２）；连接于所述前臂掌侧板（２）的内侧向板（３）和外侧向板（３’），所述内、外侧向板（３、３’）通过至少一根带状部件（６）分别靠近前臂的内、外侧定位；利用另外的至少一根带状部件（６’）贴靠着使用者手背的手背板（４）；其中，所述内、外侧向板（３、３’）各自通过万向连接装置（５）连接到手背板（４）上，所述万向连接装置（５）允许使用者的腕部沿着任意方向运动，并可以在任意角度固定。
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For the treatment of fabric or fibers suspended in distilled water solution from 0.1 to 10% of the natural fiber material. Fabric or fibers wetted with the solution 1 to 60 minutes. After wetting the fabric or fibers at a temperature of 80 ~ 160 ℃ dried for 1 to 10 minutes.
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The invention discloses a shape memory garment finishing methods, including washing, dehydration, finishing liquid preparation, finishing liquid treatment, pine drying, playing cold, heat curing and cooling moisturizing step, wherein said finishing liquid treatment is 60-80% by weight of the prepara.....
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