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Educational value chain lies in that education can enrich professional knowledge of laborer which will future increase labor productivity, that education can improve the capabilities of the learners to resolve problems and to relearn knowledge to master new techniques and handicrafts, and that education can sharpen laborers' competence for key science and technology programs to transform science and...
Oil or gas was transferred to one place by pipeline after exploitation of ocean oil&gas resources. When an old pipeline was leaking, it must be repaired. The guillotine saw is a necessary tool for repairing underwater oil&gas pipes, and is used to cut off damaged offshore pipeline. It was composed of sine cutting mechanism, eccentric cam mechanism and spiral feed mechanism. According to its...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.