This paper classifies the testing technologies of PCB, introduces the on-line testing and on-line tester.
本文对电路印制板的测试技术进行了分类，介绍了在线测试和在线测试仪。
Domestic hydraulic screwdown cylinders are compared with imported ones through bench tests and on-line testing.
本文主要介绍国产液压压下缸与进口压下缸的台架对比试验及在线测试结果。
This paper shows in detail about how to resolve some technical problems for on-line testing circuits parameters in electrical railway.
本文详细介绍了如何解决在线测试现代电气化铁路移频轨道电路参数的技术难题。
Introduces a control method of on-line testing in the multiposition loading, and analyses the reliability and safety to on-line testing.
介绍一种多点加载联机试验的控制方法，并对其可靠性和安全性进行了分析。
The on-line testing of hydrogen content in the molten aluminum alloy is very important for producing aluminum alloy castings of high quality.
液态铝合金含氢量现场检测对于生产高质量铝合金铸件及铸锭具有非常重要的意义。
This article points out that using the portable ultrasonic flowmeter can realize the large-caliber flowmeters on-line testing and calibration.
文章指出采用便携式超声波流量计可以实现在线大口径流量计的检测及校准，并介绍了检测步骤和检测时需要满足的条件。
A new technique is described for safety-valve on-line testing in which out-source gas is introduced into the cavity enclosed by the valve plug and rupture disk.
介绍了一种利用外接气源，向安全阀瓣与爆破片形成的隔离腔内直接充压，对安全阀进行在线检测的方法。
On-line testing is a method for directly testing the properties of products in the course of production.
在线检测是指在生产过程中直接对被检测产品的特性进行检测的方法。
On-line testing shows that, this digital ultrasonic peening power supply based on DSP can make the system work at the resonance state, and the peening process is stable.
联机试验表明，本文研制的基于DSP的数字化超声冲击电源可以使系统工作在谐振状态，冲击过程稳定。
In designing and researching on line testing system, much emphasis should be given to its practicability and feasibility.
设计和研究在线考试系统的重点是实用性和可行性。
In designing and researching on line testing system, much emphasis should be given to its practicability and feasibility.
设计和研究在线考试系统的重点是实用性和可行性。
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