The redistribution behavior of internal plasticforce and the moment modification limited value of tubular hollow continuous slab were studied through experiment and theoretical analysis.
试验与理论结合，研究了圆管式空心连续板的塑性内力重分布性能与弯矩调幅限值问题。
2
Ms. Ma's shopping routine has changed very little since the plastic bag ban came into force.
自从实行禁止使用塑料袋，马小姐的日常购物惯例没有改变。
3
China will join a growing list of countries on June 1 that are aiming to change shoppers' habits when a ban on the production of plastic bags under 0.025 millimetres thick comes into force.