共查询到19条相似文献,搜索用时 71 毫秒
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PDMWorks是一个与SolidWorks完全集成的PDM解决方案,文章通过实例说明了PDMWorks软件的具体应用方法,对PDMWorks软件图文档资料管理的功能特点进行了归纳总结。 相似文献
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经对薄膜理论的分析,说明了常见光学仪器上膜层色彩纷呈的原因和实际作用,纠正了某些人群对膜系功能的认知错误. 相似文献
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The measurement of lubricant film thicknesses in a rolling steel ball on glass flat contact, down to one nanometer is now possible by using ultrathin film interferometry. This technique has been used to study the film-forming properties of a range of synthetic base fluids in the mixed elastohydrodynamic and boundary lubrication regimes. For a very highly purified sample of hexadecane, it was found that classical EHD theory was obeyed down to less than one nanometer, indicating that any boundary film formed by this fluid was less than I nm thick. Most other synthetic fluids tested gave thicker films than predicted from EHD theory under very thin film conditions. This deviation from theory occurred at between 1 and 10 nm for different fluids. The effect can be interpreted as resulting from the presence of boundary layers, one or two molecular layers thick of the fluid on each solid surface, which are more viscous than the bulk lubricant. 相似文献
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马志亮 《仪器仪表与分析监测》2014,(4)
光学薄膜产品在军事、空间科学和工农业生产中发挥着重要作用.面对日益复杂的需求,膜系设计动辄数十、上百层,纯手动或半自动化的镀膜机已经不能满足现有需求.随着计算机和自动化技术的发展,全自动精密光学镀膜机的出现成为现实.主要介绍全自动真空蒸发镀膜机自动化系统的构成、相关硬件模块和软件内容. 相似文献