| 释义 |
bipolarity|baɪpəʊˈlærɪtɪ|
[f. prec. + -ity.]
1. Bipolar quality or state. Also transf. and fig.
1865Mansfield Salts 53 The voltaic bipolarity of each. 1917C. R. Payne tr. Pfister's Psychoanal. Method i. xii. 361 As a result of the ‘bipolarity of all psychic phenomena’, each of the two possible interpretations..may be correct. 1955M. Beloff Foreign Policy 9 We have been taught to view things in the light of the rivalry between two powers and two powers only..‘bipolarity’, as it is called.
2. The occurrence of the same species in each of the polar regions but not in the intervening zones (see also quot. 1959).
1896A. E. Ortmann in Proc. Acad. Nat. Sci. Philad. 1895 191 Neither in this species is..a bipolarity of the genus probable. 1959New Biol. XXIX. 117 Bipolarity..has undergone some change of meaning... In a very short period of time, the sharpness of its meaning was lost and bipolarity came to include those cases where organisms occurred in the north and south temperate zones but were absent from the tropics. The term underwent still further changes and was used to cover not only species, but genera and even higher classification categories provided they had a discontinuous distribution with northern and southern forms. |