衛星テレビは地球の最も遠いところまで届きます, 通常のプロバイダーや放送塔がない場所. どこにでも設置できるコンパクトなシステムが利用可能. パラボラアンテナは色と鮮明な画像を提供します. 衛星テレビに使用される一般的なケーブルは衛星同軸ケーブルです. … 続きを読む
装甲光ファイバー ケーブルは、コアの周りに金属外装シースが巻かれた光ファイバーの一種です。. この装甲層により、ケーブルは強い圧力と伸びに耐えます, 過酷な環境からも保護します. 装甲光ファイバーケーブルはより強力です, 通常の光ファイバーケーブルよりも信頼性と耐久性に優れています.
南京駅によると, で 18:20 8月に 8, 南京長江大橋の高速道路橋が付属場所のケーブルの下で爆発して炎上し、煙が上がった, 消防署と鉄道関係部門は速やかに処分した, 一部の列車に遅れが発生しています. 事件の原因は調査中です.
Fiber optics has been one of the main pillars of modern communications. It has a large communication capacity and long transmission distance. It also has the advantage of being highly sensitive and immune to electromagnetic interference. それで, how exactly does fiber optics transmit optical signals?
現在のところ, the cable industry is accustomed to flame retardant (FireRetardant), LowSmokeHalogenFree (LSOH) or low halogen low smoke (LSF), fire-resistant (FireResistant), 等, with certain fire performance of the cable, are collectively referred to as fire-resistant cable.
With the development of optical communication networks and the deepening of fiber optic access, FTTH network construction is growing exponentially.
現在のところ, both China Telecom and China Netcom have indicated that they will invest huge amounts of money in the large-scale commercialization of FTTH.
Ultra-high voltage transmission refers to the use of 500 kV-1000 kV voltage levels to transmit electricity.
If the 220 kV transmission index is 100%, the relative investment per kilometer of UHV transmission, the relative cost per kilowatt-hour electricity transmission a hundred kilometers and the consumption of metal materials, 等, have been significantly reduced, and the line corridor utilization rate has been significantly improved.
In our daily lives, we can often see the overhead ultra-high voltage transmission project, whether we have thought about the question: why can not be like the city underground cable, high-voltage power lines all buried underground?
あ shielded control cable is generally used as the connection line of electrical instruments.
It is suitable for the connection line of electrical instruments with an AC-rated voltage of 450/750V and below and the transmission line of the automatic control system.
It has excellent properties such as oil resistance, water resistance, wear resistance, acid and alkali resistance, resistance to various corrosive gases, aging resistance, and non-combustibility.
For contemporary people in most parts of the world, electricity is a necessity. It is an essential commodity that contributes to our comfort. Our jobs, gadgets, and most daily activities are directly dependent on our ability to access electricity.
