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鋼管外徑檢測(cè) |
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點(diǎn)評(píng)
沒看見“惰輥”嗎,?
請(qǐng)問一下直徑2米,長12米,,還在移動(dòng)的輥?zhàn)由�,。閣下如何確保光柵尺恰恰就在直徑位置上,而沒有偏移,?
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