弗雷德
第10楼2012/05/17
上下文:
5.1 Unstained glass fibre papers of 60mm*90mm, the glass fibre papers shall meet the following conditions:
a, grammage of 70 g/m2
b, capillary rise of 190mm to 210mm in 10 min in accordance with ISO8787,
c, free from fluorescent whitening and wet strength agents
d, free from cellulosic fibres.
难道那句话意思是要测量水的上升高度?用尺子量?