Alsophila spinulosa possibility experienced severe bottleneck effect during its evolution.
研究认为在进化历史上桫椤可能经历了严重的瓶颈效应。
Low nucleotide diversity (0.136%) was found indicating a bottleneck effect during ice ages.
核苷酸多态性很低(0.136%)，这可能是由于冰期瓶颈效应的结果。
To downplay this bottleneck effect, the pluralization of fund raising channels can be an objective and realistic alternative.
为突破这一“瓶颈”，筹资渠道多元化不失为一条客观而又现实的有效途径。
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