2. It has been argued that the American education is
observably slow in the pupils' mathematics training.
有人认为美国的教育在培养学生数学能力方面已明显滞后。
3. The simulation results show that this method can reduce maximal axial stress by more than 5%, and it
observably improves stress distribution.
仿真结果表明,此方法可使螺栓轴向最大应力值降低5%以上,并有效地改善了应力分布。