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the sexes
The reversal of the roles of the sexes is specific to polygamous species of the family; it has not been recorded in monogamous species.
      
We describe the spawning behavior of the Primor'e pipefish Syngnathus acusimilis.We show that fish of this species, although polygamous, have no roles reversal between the sexes, and the males are more active during courtship and mate selection.
      
Integration of the sexes in a small psychiatric rehabilitation hospital is discussed.
      
- Even if cultural factors have considerable influence they can hardly explain the very great imbalance of the sexes.
      
The authors argue that this makes it necessary to separate the sexes in the epidemiological studies on suicide.
      
Differences in the social roles of the sexes may explain these results.
      
All relative risks were significant (P >amp;lt; 0.001), but did not differ between the sexes (P >amp;gt; 0.4).
      
No significant differences were found between the sexes.
      
The adolescent moratorium is open to both sexes, and sexuality, love and generativity, that the sexes produce together, have been democratized in the course of the cultural change.
      
Their history from Athens 1896 to Peking 2008 shows brilliant results concerning the formal equality of the sexes.
      
No significant differences in movement patterns were found between the sexes, but a tendency was observed for males to show higher terrestrial site fidelity than females.
      
The mean age did not differ between the sexes but males were smaller in body size than females.
      
The results do not confirm differential movement patterns between the sexes.
      
Although the sexes had similar mean ages, mean body length of males was significantly higher than that of females (283 versus 255 mm).
      
Males had longer tails than females at all ages/sizes and the difference between the sexes increased with increasing snout-vent length.
      
We showed that bills of males and females differed with regard to length but not curvature or depth, despite clear differences in foraging behaviour between the sexes.
      
Given the visibility of males to predators, the question arises how they avoid predation and whether the sexes differ in anti-predator behaviour.
      
Snout-vent lengths of 126 measured individuals ranged from 9.6-25.7 mm, and the sexes were distinguishable at a length of 18.5 mm.
      
Females of many species receive male attention that reflects a conflict between the sexes over reproduction.
      
Variables that increase female co-dominance are intensity of aggression, group cohesion, a clumped distribution of food, a similar diet for the sexes and sexual attraction (by one sex to the other, but not mutually).
      
 

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