刮板输送机

The fourth part:"the Decisiveness of Process in Historical Movement and Variation of Way in Social Development".

第四部分"历史运动过程的决定性与社会发展道路的多样性"。

To raise a timing scheme for small size model drift chamber on the basis of results above mentioned and the requirement of BTCF.

第五，根据以上研究结果和BTCF的要求，提出了一个小单元漂移室的定时方案。