... 虚质量:imaginary-mass 虚约束:virtual constraint 虚应力原理:principle of virtual stress ...
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virtual constraint number 虚约束数
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The paper discusses the criterion for deciding virtual constraint and the sufficient and necessary conditions for the constraint existing in mechanisms.
本文论述了机构中存在虚约束的充分必要条件及虚约束的判定准则。
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