單項選擇題

并條工序的順牽伸工藝是指()

A.頭道牽伸倍數(shù)<末道牽伸倍數(shù)
B.頭道牽伸倍數(shù)=末道牽伸倍數(shù)
C.頭道牽伸倍數(shù)≠末道牽伸倍數(shù)
D.頭道牽伸倍數(shù)>末道牽伸倍數(shù)

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