eight-square double tangential circle的意思|示意
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八方双切圆
eight-square double tangential circle的网络常见释义
八角双切圆 ...八角双切圆；六角切椭圆 [gap=789]KEY WORD: ultra-supercritical; boiler combustion; wall type tangential circle; eight-square double tangential circle; hexagonal tangential oval circle ..