單項(xiàng)選擇題當(dāng)工藝系統(tǒng)剛性差時(shí),車削細(xì)長(zhǎng)軸,偏角應(yīng)選用()

A.10°~30°
B.30°~45°
C.60°~75°
D.90°~93°


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