... 无效引用 no-valid reference; 无效应菌株 ineffective strain; 无效约束 inactive constraints; ...
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ineffective strain of nodule bacteria 无效根瘤菌株
·2,447,543篇论文数据，部分数据来源于NoteExpress
They believe that the Lister strain may be ineffective against the type of smallpox likely to be used in a terrorist strike.
BBC: Q&A: Smallpox vaccine
But against a particular strain of Influenza B, the vaccine is proving completely ineffective.
FORBES: Why the Flu Is So Dangerous This Year, and Why It Could Get Worse
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