電線上的房子之間看起來像網球拍的東西是什麼？

電線上的房子之間，經常懸掛著一個個白色或灰色的網狀物體，看起來很像是網球拍。這些網狀物體實際上是「網球拍護線器」，又稱為「電纜護線器」。

網球拍護線器的主要功能是保護電纜不受外力損傷。電纜在懸掛過程中，容易受到風吹雨打、樹枝摩擦或動物啃咬等因素的影響，導致破損。網球拍護線器可以有效分散這些外力，避免電纜直接受到撞擊或摩擦，從而延長電纜的使用壽命。

電纜護線器通常由耐腐蝕、耐高溫的工程塑料製成，造型為網格狀，可以包裹在電纜的表面。其網格結構可以吸收外力，同時還具有一定的透氣性，有利於電纜散熱。

在實際應用中，電纜護線器廣泛用於高壓輸電線路、電力電纜和通訊電纜等領域。其使用可以大大提高電纜的安全性、可靠性和使用壽命，對確保電網安全運轉具有重要意義。

相关问题：

  1. 電線上的「網球拍」是什麼？電纜護線器
  2. 電纜護線器的主要功能是什麼？保護電纜不受外力損傷
  3. 電纜護線器通常由什麼材料製成？耐腐蝕、耐高溫的工程塑料
  4. 電纜護線器在哪些領域得到廣泛應用？高壓輸電線路、電力電纜和通訊電纜等
  5. 電纜護線器對電網安全運轉有什麼作用？提高安全性、可靠性和使用壽命
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