Therefore it is very essential to apply the prevention and cure measures to prevent and delay cracking of the structure of asphalt in cement and fly ash stabilized crushed-stones base.
因此，采取防裂措施防止和延缓水泥粉煤灰稳定碎石基层沥青路面结构开裂是十分必要的。
FCCU (fluid catalysis and cracking unit) is a highly non-linear, time variable, long time delay, intensive coupling, parameter distributed, indefinite and complex system.
催化裂化装置是一个高度非线性、时变、长时延、强耦合、分布参数和不确定性的复杂系统。
Preparing double protection and jointly cracking down on counterfeiting, cybersquatting and other violations are without delay.
做好双项保护、共同打击仿冒、抢注等侵权事件刻不容缓。
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