About Xu Guangbo
About 大連科技学院,遼寧大連,116000
About Zhang Xiuyan
About 大連科技学院,遼寧大連,116000
About Nanfang Nongji
About machining
About twist drill
About control system
About wiring
About on-off control
About machine tool
About production capacity
About failure rate
About bed
About failure
About システム制御
About Electric control equipment
About Cutting in general
About Other cutting
About ドリル
About 電気制御システム
About 設計