At least 1 year experience of structure design in peb industry and 3 years of structure design 3年以上建筑结构设计相关经验，其中至少一年钢结构建筑设计经验。
2.
At least 3 years experience of detailing design in peb industry with the maintenance system of building structure 3年以上预制钢结构建筑详图设计的经验，熟悉建筑围护系统
3.
The historical five - year peb and for selected stocks in the industry between 1991 and 1995 was about 10 to 100 从1991到1995年之间，这行业内某些股票的5年本益比历史波动大约是介于10至100 。
4.
Another disadvantage for sra algorithm is that it cannot avoid the instance that some traffic classes may be jammed abruptly , but other traffic classes have free resources . the thesis presents an algorithm , called peb _ esra ( pre - estimation and borrow based esra algorithm ) , which permits borrowing resources among traffic classes . to some extent , it solves the short - term unbalance of resources allocation 针对sra算法无法解决可能出现的某业务类突发性拥塞，而其他业务类尚有空闲资源的情况，论文在继承peesra算法的基础上，提出允许业务类之间资源借用的pebesra ( pre - estimationandborrowbasedesraalgorithm )算法，该算法在一定程度上缓解了由于业务流突发性拥塞造成的资源配置短期失衡问题。
5.
From the simulation of peb process , we prove that peb could reduce standing wave effects and improve resist development profile . after analyzing the effects of standing wave effects on resist profiles , we bring forward a certain thickness and these effects could be ignored when resist is beyond that value . finally , the characters of thick resist profile are analyzed , and experiment results are also given 同时，在论文中还深入讨论了抗蚀剂折射率变化对光场计算带来的误差；模拟了后烘过程对驻波效应的改善作用，论证了采用适当的后烘工艺改善抗蚀剂光刻质量的作用；分析了驻波效应对厚层抗蚀剂显影轮廓的影响，提出了一个可以忽略驻波效应影响的抗蚀剂厚度条件值；最后还模拟和分析了厚层抗蚀剂显影轮廓特点并给出了实验结果。
