Looking for a new sizing material that substitutes PVA has become our common understanding, because PVA causes serious pollution and destruction to environment.
由于PV A对环境造成严重的污染和破坏，寻找一种新的浆料来替代PVA已经成为大家的共识。
Because of the big density and weaving difficulty for the cotton waterproof eider down clothing, the general sizing material can not meet its sizing requirement.
纯棉防水羽绒布经纬密度高，织造难度大，普通浆料不能满足织造上浆要求。
Serial taps comprise of one or more undersized roughing taps which remove most ot the material before final sizing with a finishing tap.
成套丝锥由一支或者更多在用精加工丝锥最终加工到尺寸之前移除大多数材料的较小尺寸的粗切丝锥组成。
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