4912| 12
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圖示工件能看出是什么表面處理嗎? |
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點(diǎn)評
內(nèi)圈是硬質(zhì)陽極,一般寫上這四個(gè)字,一般都是這個(gè)顏色,外圈小的我猜是本色硬質(zhì)陽極!
評分
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