In the second half of twentieth century, the development of Megalopolis has been the mainbody of American urbanization.
摘20后半期,大都市连绵带的发展成为美国城市化的主内容。
In the second half of twentieth century, the development of Megalopolis has been the mainbody of American urbanization.
摘20后半期,大都市连绵带的发展成为美国城市化的主内容。
The nonlinear restoring force is expressed into both parts of the linear mainbody and the nonlinear auxiliary.
将系的非线恢复力表示为线主部和非线辅部;
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