Determination of xerophyte key irrigation water period;

Rainfall,soil water content,plant height,leaf area index(LAI),biomass and forage yield were measured in field plots under no irrigation(CK),winter irrigation(W1),irrigation during key growing stage(W2),and the .

Climatic change of precipitation during key water requirement period of highland barley in Tibet;

In rats, postnatal 3 to 5 weeks are critical for their development (namely, critical period), during which the excitatory and inhibitory synapses mature to form functional circuits in visual cortex.

This paper deeply explores impairment and non-impairment from three perspectives, such as whether critical period constitutes the obstacle for the feature accessibility, what the initial state of functional category is, whether the surface morphological features are relevant to syntax, and states that they.

This paper analyses some problems and misconceptions in English learning and teaching in China: Does there exist a critical period in language learning? What s the difference in language learning between adults and children? It also provides the author s viewpoints and suggestions about language teaching and learning.