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单词 virtual
释义 virtual
adj.
  1. that is such for practical purposes though not in name or according to strict definition (is the virtual manager of the business; take this as a virtual promise).
  2. Optics relating to the points at which rays would meet if produced backwards (virtual focus; virtual image).
  3. Mech. relating to an infinitesimal displacement of a point in a system.
  4. Computing not physically existing as such but made by software to appear to do so (virtual memory).
Derivatives
virtuality n. virtually adv.
Etymology: ME f. med.L virtualis f. L virtus after LL virtuosus
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更新时间:2025/3/10 13:34:29