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arch action 拱作用 ; 成拱作用
bi-arch action 双拱结构
composite arch action 组合拱作用
narrow valley arch action 狭窄河谷的拱效应
Make this action strong, but don't let it cause your front ribs to jut forward or arch your low back.
做这个动作应该有力量,但不要引起肋骨外翻或者下背部成拱形。
Elderly people often massage function, can prevent the legs and feet numbness, weakness of the arch action, cool phenomenon.
老年人经常按摩脚心,可防止腿脚麻木,行动无力,脚心凉冷等现象。
Vertical elements carry sufficient load through cantilever action to produce cantilever deflections equal to arch deflections.
垂直杆件则借悬臂作用产生和拱挠度相等的悬臂挠度,来承担足够的荷载。
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