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China Mechanical Engineering
1004-132X
1977 Issue 3
hu bei 74 xing shou dong cai cha ji
..............page:23-24
yun yang 20 lv dai tuo la ji jian jie
..............page:10-12
ch508 xing cha ye hong gan ji
..............page:27-28
e 6ct18 xing cha ye rou qie ji
..............page:25-26
hu bei 6 xing shui tian zuo ye chuan
..............page:19-22