Because the model has provided the foundation to determine the key parameters of modified routine method and beam-spring method, calculation of shield tunnel segment becomes more rational.
该接头刚度模型为梁-弹簧模型法和修正惯用法中的关键参数确定提供了基础，管片的内力计算也更加合理。
Top flap features a tab closure that secures with a "LRL"-embossed double spring-action shield lock at the front.
顶部瓣功能封一个标签，“LRL”浮雕双弹簧行动在前面的盾锁保护。
PVC cloth protecting curtain The automatic pull-out and take up shield with the shell made of stainless steel consists of shell, spring shaft and fabric cloth.
PVC 布防护帘外壳用不锈钢材料制成的自动伸缩式防护带，是由外壳、弹簧轴、和纤维布等组成。
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