Concrete npu na n-gun rawng ai arung arai ni a line swedeners ni a matu, spike hte concrete hte concrete arung arai ni a lapran na matut mahkai lam gaw kaba ai hte n kaja ai lam ni gaw n kaja ai. Miwa mungdan gaw, gusse-type rigid rigid rigid rigid rigid rigid fastensers hte elastic fastensers{4} ngu ai, wanleng npu hte concrete rail a lawu daw hta, n-gun n rawng ai lam ni a lapran na matut mahkai lam gaw n kaja ai. Miwa mungdan gaw, n-gun ja ai n-gang langai mi nga ai ngu ai manghkang hpe hparan ra ai. vertical direction hta line a elasticity hpe grau kaja hkra galaw na matu cushion; n-gup magap a n-gup magap hte concrete rail a lawu daw hpe sulfur achoring [1]. hte galaw da ai.
Rail buckles ni hpe edit galaw nna, rail hte npu na n-gun ni a n-gun ni hpe splicing fittings, splicing bars hte hooks{1}} arung arai ni hte maren garan tawn da ai. n-gun atsam hte n-gun n-gun n-gun n-gun n-gun n-gun hpe galai shai ai lam hpe gram lajang ai lam n nga ai, dai majaw elastic si mang ni a anti-climbing galaw ai lam gaw, n-gun ja ai n-gun rawng ai ni a n-gun atsam hta grau kaja ai.
