九九热精,久久久穴,久久美女视频,91国自产精品中文字幕亚洲午夜,国产精品久久久久久夜夜夜夜,二区视频在线,久久国产精品系列

  1. Telephone cable transmission distance

    In our general construction process, we do not consider the transmission distance of large logarithmic local telephone cables and ordinary telephone lin...

  2. What problems should we pay attention to when transporting electric wires and cables?

    Wire and cable products need to go through a certain process of transportation and storage from the factory to delivery to the user. During this period,...

  3. Attention points in the application of wire and cable products?

    1, sprain, pull cable in the installation process, should use the wire release frame, otherwise it is easy to cause twisting and twisting cable sprain a...

  4. Why do flame retardant cable products burn when lit with lighters?

    First of all, the definition of flame retardant cable is: flame retardant cable, cable with specified flame retardant properties (including flame retard...

  5. Excuse me, what is the difference between your outdoor network cable and indoor network cable?

    The outer sheath of outdoor network cable is PE (polyethylene), which has the characteristics of corrosion resistance and ultraviolet resistance. The ou...

  6. Why to discover indoor 4 core fiber optic cable construction to be able to be like after finishing f

    Because in the construction process, the cable sheath is pulled when threading, and the tension is too large. When the construction is completed, the sh...

  7. Why does the GYXTW outdoor optical cable only produce less than 12 cores?

    GYXTW is a central beam tube type, that is, there is only one loose sleeve in the middle. According to the national standard on the color of fiber core,...

  8. If distinguish module 90 degrees and 180 degrees IDC line?

    The Angle formed by the direction of the crystal head insertion module and the direction of the wire cutter is used to distinguish. The speech module an...

  9. How to distinguish indoor optical cable from color?

    Yellow represents single-mode optical cable; Orange represents multimode optical cable; Some manufacturers use blue to represent multi - mode million op...

  10. What is the transmission distance of multimode optical cable in gigabit network?

    A1a (50/125um) class multi-mode fiber has a transmission distance of 550 meters; A1b (62.5/125um) class multimode fiber has a transmission distance of 2...

15 records 1/2 page next page  1  2 
通渭县| 钟祥市| 嘉禾县| 舟曲县| 西宁市| 府谷县| 延安市| 遂溪县| 平阴县| 隆尧县| 南部县| 广水市| 柳河县| 昌吉市| 岳阳县| 廉江市| 页游| 永川市| 阳春市| 桦甸市| 阳曲县| 无棣县| 揭东县| 合江县| 五大连池市| 吉木乃县| 五莲县| 县级市| 南溪县| 大丰市| 嘉峪关市| 米易县| 甘泉县| 女性| 乌拉特前旗| 兴仁县| 喀喇| 丰台区| 建德市| 蒙阴县| 枞阳县|