Ralwaiy station par samudra tal ki uchai kyon likhi rahti hai
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Ye kuch Mathematical reasons ke vajah se likhi hoti hai,
kyuki jaise jaise unchai badhti hai vaise hi Engine ko jyada force lgana pdta hai coach ko hual krne ke liye.
aur ye logo ko thodi basic info dene ke liye bhi likhi hoti hai .
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