minimum diameter vessel requiring manhole 要求人孔的最小直径容器

small-diameter vessel 小口径血管

atmospheric-pressure large-diameter vessel 大直径常压容器

diameter of vessel 容器直径

Nominal diameter of pressure vessel 压力容器公称直径

external diameter of vessel 血管外径

blood vessel diameter 血管内径

reference vessel diameter 参考导管直径

Vessel Diameter 容器直径