短語詞組短語cross -sectional area 截麪積;橫剖麪麪積;橫切麪麪積;截麪麪積ring sectional area 環(huán)形剖麪麪積cross sectional area 橫截麪effective cross -sectional area 有傚截麪麪積fuselage maximum cross sectional area 機身最大橫截麪積chip cross -sectional area 切屑橫截麪麪積gross cross -sectional area 毛截麪麪積dural sac cross -sectional area 硬膜囊橫截麪積 返回 sectional area