As it is known that the double set parameter method is an effective method for constructing finite elements of higher order problem (such as plat bending problem finite element).
众所周知，双参数方法是构造高阶问题有限元(例如薄板弯曲问题单元)的有效方法。
The utility model can be applied to all ship plat bending rolls.
本实用新型可应用到各种船用卷板机中。
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