These are the technological routes that adopted. Traditional motivational theories include demand level theory, dual factors theory, theory of expecting, aggrandizement theory and setback theory.

传统的激励理论包括需求层次理论、双因素理论、期望理论、强化理论和挫折理论，这些理论自成一说，相互补充。

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The shock response of setback systems when dropping and at firing is analyzed with the aid of vibration theory, thereby arriving at the condition equations on dropping safety and arming reliability.

考虑后坐机构在坠落和发射时的冲击响应，按振动理论建立了后坐机构坠落安全和发射时可靠解除保险的条件式。

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