免费国精产品自偷自偷免费看_在线看片成人_www.77伦理bt.com_特级黄色一级片_免费夜色污私人影院在线观看_国严精品久久久久久亚洲影视

[attachment=140762]  [attachment=140761]  [attachment=140760]  [attachment=140759]  [attachment=140758]  [attachment=140757] 想自制一個4-20ma的信號發生器，準備把擴散硅壓力變送器改裝一下。  但是拆開后看不懂擴散硅反饋的是什么信號。  自己菜鳥級別，無從下手。    特請師傅們有時間時看看能不能把擴散硅去掉換成電位器，能在4-20ma調節。    那4根線和電位器怎樣接。                                                                                                                                                                

  牛!牛!牛!牛!