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  • 网络双螺杆挤出机;石油化工行业标准
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  1. This paper is focused on basic construction , working theory and application programs of SHJ - 40 digital pressured apparatus controlled by single - chip computer , which is light , small and cheap and so on .

    本文将讲述SHJ-40型数字压力表的基本结构和工作原理以及应用程序,该仪表具有轻、小、廉等特点。