ulpa meaning in English
超高效空气过滤器
Examples
- Hepa / ulpa filter installation leak test . this test is performed to verify that the filters have been properly installed and are free of leaks
Ulpa过滤器现场泄漏试验。该项测试用于检验滤器已正确地安装，没有泄漏现象。 - Therefore , a primary research and discuss on optimized design for geometry parameters of piezocrystals and wedges in ulpa were taken in this study
因此本研究从晶片和楔块两方面对超声相控线阵换能器的几何优化设计进行了初步研究和探讨。 - Later it was taken that the optimized design for geometry parameters of longitudinal and transverse array ulpa wedges , and the principles for the optimized design of wedges " angles and the distance from piezocrystal center along wedge surface to test surface were deduced
随后进行了纵向和横向两种线阵楔块的几何优化设计，推导出楔块角度以及晶片中心沿楔块表而到探测而距离的优化设计原则。 - Geometry parameters of piezocrystals and wedges in ultrasonic line phased arrays transducer ( ulpa ) have important effects on transducers performance . so far , there havent been issued papers about optimized design for geometry parameters of piezocrystals and wedges based on considering all kinds of factors
超声相控线阵换能器晶片和楔块的几何参数对换能器性能的影响很大，迄今为止，尚未见在综合考虑各方面因素的基础上提出晶片和楔块几何优化设计方法的报道。 - Finally according to the above mentioned results , two universal ulpa were made and their performance were tested . these results indicated that on the whole , the values of parameters , such as sensitivity of each element , center frequency , relative bandwidth and cross coupling among near elements and so on , and their consistency all meet the ask of technique . therefore , both of transducers performance are favorable
最后根据上述研讨结果，制作了两个通用超产相控线阵换能器，并进行了性能测试，结果表明两个换能器各阵元灵敏度、中心频率、相对带宽、相邻阵元间串波等参数值及其一致性均基本满足技术要求，换能器性能良好。