According to the demand of b - type scanning ultrasonic flaw - detector , author has designed a platform of high - speed and real - time embedded system using the scheme , which combines dsp - arm framework with windows ce embedded operating system 本文以b扫超声波钢轨探伤仪的设计需求为依据，采用dsp - arm双核构架和windowsce嵌入式操作系统结合的设计方案，设计了一个满足项目需求的高速实时嵌入式系统平台。
Conclusion despite an initial reduction in plasma b - type natriuretic peptide level in patients in the levosimendan group compared with patients in the dobutamine group , levosimendan did not significantly reduce all - cause mortality at 180 days or affect any secondary clinical outcomes 结论：尽管和多巴酚丁胺组相比，左西孟旦组能降低病人初期血浆b型利钠肽水平，但是左西孟旦并不能显著地降低180天所有原因死亡率或其他任何次级观察结果。
Abstract : based on set up a three - section simulated moving - bed system , the separation process and principle and the effects of the main operation parameters of the b - type three - section smbc are analyzed carefully . the switch time and the column asymmetry are discussed . these analysis were proved by the actual separation experiments of biphenyl and fluorene on the smbc system 文摘:在自行设计组装的一套三带模拟移动床色谱系统基础上，对三带模拟移动床色谱系统的分离过程和主要的操作参数切换时间及柱不对称性的影响作了比较详细的分析.通过具体的分离实验，验证了三带模拟移动床色谱的主要操作参数切换时间对分离结果的影响
Abstract : in view of the application of calculation formulae on clamping force of circular eccentric , this paper presents classification by self - locking degree and corresponding calculation of clamping force . on the basis of analyzing an comparing a - type and b - type eccentrics , it is concluded that the former has an advantage over the latter . and then the reasonableness of the standard eccentricity and tolerances is discussed and some revisions are suggested . this offers a dependable theoretical foundaation for design and application of the device 文摘:针对圆偏心夹紧机构夹紧力计算公式的应用问题，提出了按圆偏心自锁程度不同的分类方式及其相应的夹紧力计算方法；分析比较了a 、 b两类偏心的夹紧特性，得出了前者优于后者的正确结论；讨论了标准偏心轮的偏心距及其公差取值的合理性问题，并提出了相应的修改建议，为正确设计和应用该机构提供了可靠的理论依据。
In view of the application of calculation formulae on clamping force of circular eccentric , this paper presents classification by self - locking degree and corresponding calculation of clamping force . on the basis of analyzing an comparing a - type and b - type eccentrics , it is concluded that the former has an advantage over the latter . and then the reasonableness of the standard eccentricity and tolerances is discussed and some revisions are suggested . this offers a dependable theoretical foundaation for design and application of the device 针对圆偏心夹紧机构夹紧力计算公式的应用问题，提出了按圆偏心自锁程度不同的分类方式及其相应的夹紧力计算方法；分析比较了a 、 b两类偏心的夹紧特性，得出了前者优于后者的正确结论；讨论了标准偏心轮的偏心距及其公差取值的合理性问题，并提出了相应的修改建议，为正确设计和应用该机构提供了可靠的理论依据。
