本发明公开一种定位治具,包括承载体,第一夹持体及第二夹持体,该承载体夹持于第一夹持体与第二夹持体之间;所述承载体包括连接部及设置于连接部一侧的定位部,该定位部包括承载面及斜面,该承载面及斜面相交一定的角度,该连接部上间隔开设若干相互平行的分度槽;该第一夹持体上凸设凸棱;所述第一夹持体上的凸...
< Topic >Without requiring the dedicated equipment and material, simultaneously the stamping the lead/read frame assembly of the optical isolator which can make the mounting pad face which each lead/read frame which formed has respectively is offered.SolutionsIn the identical sheet metal material, ex...
目的探讨成分血液制备过程中血液报废的原因及预防措施,以便降低血液报废率,充分利用血液资源。方法统计2012至2014年血液报废情况并分析报废原因。结果成分血制备过程... 王丽娟 - 《世界最新医学信息文摘:电子版》 被引量: 4发表: 2015年 成分制备物理血液报废的原因及预防策略研究 血站成分制备过程中采取相应的预防处...
PURPOSE: To produce a γ,δ-unsaturated alcohol in high formaldehyde conversion and high selectivity and yield because of the suppressed by-production of alkyl- m-dioxanes by reacting an α-olefin with an aqueous solution of formaldehyde in the presence of a specific solvent.收藏...