【Abstract】With the globalization of world economy， international trade has been accelerated since 1990s. International ......

研究目的:通过在不同运动项目的大学生运动员身体九个部位佩戴三维加速度计,测得在多种运动方式下不同部位的三维加速度数据;同时......

The safety performance of ~(241)Am fire alarm sources made by using powder metallurgical technology has been preliminari......

In order to achieve the auto-timing counts measurement of nuclear radiation using ORTEC 974 Counter/Timer, an auto-timin......