China Petroleum Machinery 1977 Issue Z1 ci li da lao qi

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China Petroleum Machinery
1001-4578
1977 Issue Z1

ci li da lao qi

..............page:14-19

shi you zuan cai guan cai de wei hu yu guan li ( er ) b2 zuan gan jie tou de wei hu yu guan li

..............page:74-103

luo pan ding xiang ce xie yi

..............page:5-9

wo lun zuan ju da lao tou

..............page:59

ran qi lun ji zai shi you gong ye shang de ying yong
zhu nai zhao ;

..............page:43-59

zen yang ti gao san jiao jiao dai de shui ping

..............page:60-73

yi zhong xin xing de shui long tou chong guan zong cheng

..............page:10-13

2s1c₁ xing ni jiang jing hua zhuang zhi

..............page:1-4

cm 32 xing you guan ka pan

..............page:104

40 meng zuo zuo kang liu you guan shi yan shi yong xiao jie

..............page:33-42

ju ji nei zuo ju an zuo xiang jiao wei ce xiang dian ji ban shi zhi cheng gong

..............page:105

hs 30 xing ji xie hun sha che

..............page:20-32

8.8 80 1 xing tong jing ji gai zao chu jian xiao guo

..............page:42