Russian-Chinese trade began to achieve fairly rapid development in the late 1980s. In recent years, however, bilateral trade has shown a declining trend. In 1997, the amount dropped by 10.6 percent from 1996 to US$6.1...Russian-Chinese trade began to achieve fairly rapid development in the late 1980s. In recent years, however, bilateral trade has shown a declining trend. In 1997, the amount dropped by 10.6 percent from 1996 to US$6.12 billion. Whether in Moscow or Beijing, people distinctly realize that both sides earnestly hope to enhance cooperation on a brand-new basis. For this purpose, both governments are putting into practice longterm mutually beneficial large cooperation projects in areas of technological investment. In December 1997, the two sides signed the contract on展开更多
The lesion of nucleus robustus archistriatalis (RA) has no effect on normal short calls in the bramble finch, but affects significantly the temporal and acoustic features of learned long calls.It causes the principal ...The lesion of nucleus robustus archistriatalis (RA) has no effect on normal short calls in the bramble finch, but affects significantly the temporal and acoustic features of learned long calls.It causes the principal frequency of basic sound in monotone long calls to increase 500 cents, and to lose two upper partials. The lesion of RA not only results in the increased sound length of loud-sound and shortened coda of variable-tone long calls by 13.4%-22.1% and 21.2%-24.2% on average, respectively, but also makes the frequency rising coefficient (FRC) of even order partial tone in loud-sound drop 18.5%-25.8% on an average, and the step-up rate decrease 22.7% -24.0% on an average with the increase of frequencies. These results show that the control of temporal and frequency features of learned calls by RA matches to each other. Moreover, the lesion of bilateral RA can confuse the vocal pattern, and the produced long call has the character of both the mono- and variable-tone long calls. The prelude shows rising frequency, and the loud sound is monotone sound.展开更多
文摘Russian-Chinese trade began to achieve fairly rapid development in the late 1980s. In recent years, however, bilateral trade has shown a declining trend. In 1997, the amount dropped by 10.6 percent from 1996 to US$6.12 billion. Whether in Moscow or Beijing, people distinctly realize that both sides earnestly hope to enhance cooperation on a brand-new basis. For this purpose, both governments are putting into practice longterm mutually beneficial large cooperation projects in areas of technological investment. In December 1997, the two sides signed the contract on
基金the National Natural Science Foundation of China (Grant No. 39570195) and Outstanding Youth Foundation of Ministry of Education of China.
文摘The lesion of nucleus robustus archistriatalis (RA) has no effect on normal short calls in the bramble finch, but affects significantly the temporal and acoustic features of learned long calls.It causes the principal frequency of basic sound in monotone long calls to increase 500 cents, and to lose two upper partials. The lesion of RA not only results in the increased sound length of loud-sound and shortened coda of variable-tone long calls by 13.4%-22.1% and 21.2%-24.2% on average, respectively, but also makes the frequency rising coefficient (FRC) of even order partial tone in loud-sound drop 18.5%-25.8% on an average, and the step-up rate decrease 22.7% -24.0% on an average with the increase of frequencies. These results show that the control of temporal and frequency features of learned calls by RA matches to each other. Moreover, the lesion of bilateral RA can confuse the vocal pattern, and the produced long call has the character of both the mono- and variable-tone long calls. The prelude shows rising frequency, and the loud sound is monotone sound.
