Ask parents to put up bulletin boards, laminate learning activities, sort papers, and on and on.
要求家长收拾宣传栏，参加各个学习小组，把纸分类，等等。
2
If the volatile vapor pressure in the curing laminate exceeds the actual pressure on the liquid resin prior to gelation, then void formation and growth will occur.
如果树脂凝胶前挥发物的蒸气压力超过树脂流体的压力，则会在层板中生成孔隙，而且孔会长大。
3
Is the stack height, maximum hit per drill bit, and feeds and speeds as a function of laminate type, board thickness, layer count and hole size controlled properly?