The fault tree of electric submersible pump system is established by deductive method.

Based practical investigation, the fault tree of steel common sucker rod is established by deductive method.

The idea of generic strategies was deductive in character, and thereby having gone beyond the contingency arguments.

As a effective tool to acquire new knowledge, abduction is different from deduction and induction.

Based on a typical outburst accident occurred in Nantong mine, the conditions for excitation and occurrence of coal and gas outburst are investigated by deductive method.