Virtual Machining Method for Screwdrill Helicoid
Qin Xiaoqing;Wu Longmei;Wang Xiyong;Kuang Yuchun;SINOPEC Southwest Petroleum Engineering Co.;Ltd.;Southwest Petroleum University;Research Institute of Petroleum Engineering Technology;SINOPEC Southwest Oil and Gas Field Branch;
..............page:18-22
..............page:37-39+43
..............page:52-55+83
..............page:93-96+102
..............page:97-102
..............page:103-107
MEMS-based F-P Cavity Tunable Filter
Mei Jiachun;Liu Guangchun;Dong Yi;Lu Linjun;Ren Yi;Guizhou Henghao Photoelectric Technological Co.;Ltd.;Planning Department China Petroleum Pipeline Bureau;
..............page:108-111
..............page:112-114
Welllhead Sealing Device for Super-long Stroke Pumping
Qin Yancai;Liu Xiaoling;Zhang Zhonghui;Wang Huili;Huang Runjing;Wu Feng;Zheng Qiang;Hekou Oil Production Plant;Shengli Oilfield Company;Research Institute of Oil Production Technology;Shengli Oilfield Company;Shengli Oil Production Plant;Shengli Oilfield Company;
..............page:115-117
..............page:118-120+124
..............page:121-124
..............page:125-129