In this paper, double cylinder shell structure with stiffening ribs is used to solve some problems about the impulsive environment of underwater explosion for submarine structure.
本论文以双层加筋筒形结构为主要研究模型，探讨了水下爆炸作用下潜艇结构冲击环境研究的如下几方面的问题。
The paper researched on the rule of impact response for double taper-column shell structure with stiffening ribs subjected to underwater explosion.
研究了加肋锥柱双层壳结构在水下爆炸作用下冲击响应的规律。
Two arch ribs are installed in transversal direction to form a"double bow system".
四川绵阳飞云大桥的主桥系三跨系杆拱桥，横向设两根拱肋，构成“双弓体系”。
Chances are that you'd not feel full eating only one egg roll or a few ribs. One could easily eat double, triple (or more!) than the 400-calorie serving shown to make a meal.
事情可能会这样，你只吃一个蛋卷或几个排骨不充足。人们很容易就吃下400卡路里的双倍，三倍或更多！
Conclusion The articular surface of costal head is divided into single form and double form. Double form is prone to appear in 3 to 10 costal ribs with more morphological variations;
结论肋头关节面多分为单、双两种形态，其中第3～10肋双关节面出现率更高，且形态变异较大，可能是双关节面更易出现肋头关节劳损与错位的重要原因。
Conclusion The articular surface of costal head is divided into single form and double form. Double form is prone to appear in 3 to 10 costal ribs with more morphological variations;
结论肋头关节面多分为单、双两种形态，其中第3～10肋双关节面出现率更高，且形态变异较大，可能是双关节面更易出现肋头关节劳损与错位的重要原因。
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