【正文】
? 在 EI數(shù)據(jù)庫(kù)中檢索 20222022年海洋( ocean)污染( pollution)方面的文獻(xiàn),要求限制在文摘中檢索,ocean和 pollution兩詞間隔不超過(guò) 2個(gè)詞。 ? 第四步:檢索結(jié)果截圖。選擇檢索字段和文獻(xiàn)類型、檢索年代。 ⑨ ? 說(shuō)明: ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ 檢索案例: ? 一、檢索課題:“汽車發(fā)動(dòng)機(jī)故障診斷方法” ? 第一步:分析課題,析出關(guān)鍵詞 ? ( automobile engine , automotive engine, vichicle vichicle engine, fault diagnosis) ? 第二步:制定檢索式。 Production planning and control。Algorithms。 Machine tools。 Concurrent engineering。 Production control。(Applications) ? Abstract: In order to realize reasonable job shop production scheduling andprocess planning, the concurrent integration principle of Computer Aided ProcessPlanning (CAPP) and Production Planning and Control (PPC) was described based on Nonlinear Process Planning. The problem of resource selection in the process of integration between CAPP and PPC was analyzed. Firstly, the neededoperatingcapability of machine tools was verified. Then, the amount of machiools to meet the needs of required capability was confirmed according to thefeedback of workshop planning systems. Finally, the priorityindex of eachavailable machine tool was puted based on the machine tool39。 (Theoretical)。 Chen, YuLiu ? Corporate Source: Dept. of Automat. Tsinghua Univ., Beijing 100084, China ③ ? Source: Jisuanji Jicheng Zhizao Xitong/Computer Integrated Manufacturing Systems,CIMS v 10 n 6 June 2022. p 646650+676 ④ ? Publication Year: 2022 CODEN