October 2018 1 37 Report
Panjang batang rel kereta api,masing2 10m,dipasang psda suhu 25c.koefisien muai rel adalah 14.10-6/c.agar suhu maksimum didaerah itu 35c kedua rel yg berhubungan tepat saling bersentuhan tidak menimbulkan kelengkungan jarak antara 2 batang rel ketika dpsng adlh.......
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