The visual observation was simple.
比较了4种评价PVC-U塑化度的方法:目测法简单;溶剂法迅速,容易操作;拉伸法可定量判断,但需要大量样品;DSC法准确、方便。
Based on many years of study,such methods as visual observation,interior extrapolation method and GPS positioning method used by look-outs for reporting fire are summarized.
通过多年的研究,总结了瞭望员安全报火的方法,即目测法、交叉法、航点法。
Methods 155 cases with neonatal radial artery blood sampling were divided into groups randomly by touching and visual methods and success rate of first puncture and mean time of blood sampling were observed.
方法将155例行桡动脉采血的新生儿随机分为两组,分别用触摸法和目测法行桡动脉穿刺,观察两种方法的一次穿刺成功率,平均采血时间等。
