clutch disc facing

基本解釋

One side of the pressure plate is machined smooth . This side will press the clutch disc facing are against the flywheel .
離合器壓盤的一邊是光滑的，這邊將離合器片朝飛輪方向擠壓。
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A semi-metallic phenolic resin-based friction material was developed for friction facing on clutch disc in tunnel boring machine.
研制了半金屬樹脂基摩擦材料，對其摩擦學等性能進行了研究。