发布时间:2025-02-05 22:09:15
伟星PE管材
按原料分为PE80和PEPE100,PN表示水管公称压力,SDR表示外径与壁厚之比。。
比如PE 80 PN0,.4 SDR21 D110*18.5(110表示外径,18.5表示壁厚)....
三线接近开关输出一根线黑色线接到plc输入x点一根线怎么构成回路啊谁接com点啊
2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15 2025-02-05 22:09:15