if and only if
present participle of trammel
(pharmacology) An monoclonal antibody used in immunotherapy.
(logic, mathematics) Is equivalent to; implies and is implied by; is true and false in the same cases as. / (by extension, informal) If, with added intensity
An unabridged publication, especially a reference work
二つの命題は互いに含意し合う場合に限り同値である。
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