The structural forms and the electrical connections as a actuator of the piezoelectric bimorph is analyzed in detail,the static and dynamic characteristics of the piezoelectric bimorph are measured by the power amplifier and the frequency spectral analyzer under the two kinds of electrical connections.

It also introduces the principle,connecting mode,material application and notices.

The paper states four kinds of connecting modes of higher density polyethylene (HDPE) pipes.

Influence of connection modes on heat release of copper-aluminum column-wing-type radiators;

The technical conditions of regional cooling, including selection of refrigerating unit, distribution network form, cooling radius, temperature difference between supply and return of cooling water as well as connection modes between distribution network and end users, and application of thermal storage technology are discussed.

Analyzes the feasibility of this method,and proposes the connection mode of two condensers and the control scheme of the reheat of air-conditioning system.

Selection on grounding materials and connecting methods;

With mechanics, the most appropriate connecting method of upright post with main structure is briefly introduced and its theoretical basis is also presented.

The features and applicability of effect instrument, aural eniter, and feedback sound suppressor with different kinds of connecting methods are analyzed.