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Derail Valley
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Sander/2/zh-hant
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From Derail Valley
雖然砂能非常有效地提升牽引力,但僅有動力車輛能夠撒砂。若僅是動力車輛施加動力時發生
車輪空轉
,則此已足夠。倘若是整組列車在施加軔力時
車輪鎖死
等情況下,因其他車輛無法撒砂,這將不會是個有效的解決方案,