A calculation method for blade group vibration is presented starting with boundary assumptions to take care of the influence of root flexibility.

本文给出了从边界条件着手考虑叶根柔度影响的汽轮机叶片组的振动计算方法。

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The rotary cultivator can realize deep cultivation of soil under the action of the deep plough blade group and realize shallow crushing of soil under the action of the clod crushing blade group.

本发明在深耕犁刀片组的作用下能够实现土壤的深耕，在碎土刀片组的作用下实现土壤的浅碎。

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In the case of two blade chassis, each node group should be specified on each blade.

在存在两个刀片机箱的情况下，每个刀片上都应指定每个节点组。

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The rotator cuff, a group of tendons and muscles connecting the upper arm to the shoulder blade, is also important to paddling.

WSJ: For the Love of Surfing and Wine Country