他保留此书的著作权.He retained the copyright of his book.而对于知识产业来说, 著作权人无疑是最重要的元素.And to knowledge industry, copyright person is the most important element undoubtedly.有三种方法可以使著作权保护期脱离现在的延长趋势.There are three ways out of the const...
Do you know your ABC?你认识所有的字母吗？If you want to acquire profound knowledge, you must start from the ABC.要想造就高深的学问, 就得从基础学起.Making a simple dress out of cotton cloth is easy as ABC.用棉布做一条式样简单的连衣裙太容易了....
We continuously inject a tracer into a point in a steadily moving fluid.我们连续地将一种示踪物注入某稳定运动流体中之一点.When ~ ( 238 ) Pu is used as a tracer, its recovery is 77±10 %, with activity being 0.29 dpm.当使用~ ( 238 ) Pu作示踪剂, 强度在0.29dp...