convex arc bottom 凸圆弧底
As the disorder progresses, the bottom of the foot can become convex, bulging like the hull of a ship.
由于无序的进展情况，底部的脚可以成为凸，鼓胀如船体的一条船。
Processing: etching, incised, corrosion intaglio bottom concave, convex, word word etching paint, color code, color card stickers.
加工方式：蚀刻、阴刻、蚀凹纹底、凹字、凸字蚀刻烤漆、上色、卡典贴色。
The most obvious response of building under uneven settlement occurs at the bottom story; and its ability to resist down concave deformation is stronger than that to upper convex deformation.
不均匀沉降作用下建筑物底层反应最明显，且抵抗下凹变形的能力比抵抗上凸变形的强；
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