虚位，读音为xū wèi，汉语词语，意思为空的坐位；空着的职位;有名无实的职位；特意空出职位，表示期待贤能；空名号。 唐 韩愈 《原道》：“仁与义为定名，道与德为虚位。故道有君子小人，而德有凶有吉。” 章炳麟 《陇西有壮士》诗：“虚位不如尘土，何为硜硜独自苦。”
令三条折断线的相交处有一虚位移。
Let the junction of the three fracture lines have a virtual displacement .
筏板的控制方程由薄板理论和虚位移原理得到。
The governing equations of the raft are obtained based on the thin plate theory and the virtual work principle.
根据虚位移原理，推导出基于矢量磁势的电磁力计算公式。
According to the principle of virtual-work, the formula of electromagnetic force based on magnetic vector potential is deduced.
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