attaching disc 中文意思是什麼
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Just remember there are two small poly caps that have to be trapped by a small plastic disc on the inside of the side panels before these are attached to the floor for attaching the drive sprockets later
請記住裝側板前有兩個膠套要和另一圓盤狀塑料件裝在側板內側，這是用來固定主動輪的。
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