结合具体产品，对电弧螺柱焊机电路的组成和功能进行了分析，提供了常见故障原因及排除方法。
This article analyzes the structure and function of arc stud welders and the common problems and gives the ways to work out these problems.
XD型电热灭菌器原理和结构，并通过对其故障原因进行分析和判断，找出故障排除的解决方法。
XD electric heat sterilizer, and finds out the solution of the troubleshooting via analyzing and judging the causes of the malfunction.
结合该试验机的原理分析了故障产生的原因，提出了排除故障的方法，有利于使用和维护该试压机，可靠、高效地对油管试压。
By analyzing its working principle and the cause, methods to solve the problem were put forward in order to proper use the tester to test tubing reliably and effectively.
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