Age specific life table analysis showed that the integrated effect of crowding on ZLH is stronger than on WBPH.

特定年龄生命表分析表明拥挤对白背飞虱的综合影响程度比对电光叶蝉小。

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The effect of crowding and physiological stress and shortage of food resources were the main reasons for the decline of population natality and yearly increase rate.

种群密度过高产生的拥挤效应和食物资源不足是造成种群出生率和年度增长率下降的主要原因。

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This article is to investigate the clinical effect of mild dental crowding cases applying bracketless invisible appliance by manual tooth arrangement.

本文旨在探讨应用人工排牙法制作无托槽隐形矫治器治疗轻度牙列拥挤的临床效果。

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To find out whether they were caused by a psychological effect related to the number of perceived competitors, or were merely a consequence of the greater distraction produced by crowding more people together, Dr Garcia and Dr Tor conducted an experiment.

ECONOMIST: The fewer the competitors, the harder they try