In this paper, the liquid level measurement of sealed air-condition compressor is introduced and an ultrasonic testing system based on virtual instrument is developed.
文章介绍了对封闭式空调压缩机的液位测量，研发了基于虚拟仪器技术的超声波检测系统。
The state's top-level celadon-glazed dish, a masterpiece of Ge kiln porcelain from the Song Dynasty, was squeezed by a testing instrument due to human error, the museum said in a statement on Sunday.
这件贵为国家一级文物的青釉瓷盘，系宋代哥窑瓷器珍品，在进行分析测试时因工作人员操作仪器失误被挤压受损。
With integration of DDS and computer technology, the tone burst instrument is well designed to meet the new testing standard of the sound level meter.
将DDS技术与单片机以及计算机技术结合，运用到猝发声仪器的设计中，实现了符合新的声级计检测标准的猝发声仪器的开发。
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