The structure and operating principle of the DANFLO type pressure relief valves against 'water hammer' were introduced in detail.

It introduces to structure and operating principle the DANFLO type water hitting and releasing pressure valve in details.

Analysis of operation principle for the cascaded multilevel inverter;

Waste solidification equipment is made for environmental protection,based on the introduction and the analysis of the equipment about function,operation principle,market prospect and design & fabrication,providing beneficial reference for the same equipment.

In this paper, the structure characteristic, operation principle and operation process of drum pressure filter were introduced as well as its application in chemical engineering industry, and the drum pressure filter was compared with traditional centrifuge.

The structure and working principle of lead style production motor;

TLL type centrifugal collector working principle and improvement;

Working Principle and Maintenance of Pulse Tachometer Generator;

Introduce a kind of newly be applicable to the main structure of the consecution conveyance system that the tunnel digs into the work design way of thinking and work principle analysis,transport the system with other consecutions to compare the good function characteristics,and in the coal carbon produce and tunnel dig into transport good development foreground.

This article introduces the work principle and application field of the Derrick high frequency vibrating fine screen simply.

This paper describes the structure of unit circuits of capacitor high-low adjustor, trend of signal, basic work principle and practical application of whole equipment in flame cutting.