For the leak detecting system of water pipeline based on virtual instruments, its acoustic emissionmeasurement and correlation are adopted for detecting orientation.
基于虚拟仪器的水管道泄漏检测定位系统，其检漏与定位分别采用声发射检测法和互相关分析法。
2
According to the specific requirements of national standards on transient emissionmeasurement system, a short transient emissionmeasurement system with VMAS is constructed.
结合国标中对瞬态排放测试系统的具体要求，构成以VMAS系统为基础的简易瞬态测试系统。
3
According to Kroon, however, there are considerable disadvantages to the emissionmeasurement technique most commonly used for these gases, the so-called 'chamber measurement' method.