The surface soil property on the seabed northwest area of Wunansha uplift in the South Yellow sea Basin is medium compact silt fine sand and sandy silt, which are usually called ferro plate sand.

南黄海盆地勿南沙隆起西北部海区的海床表层土质为中密实的粉砂质细砂和砂质粉砂，俗称铁板砂。

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A compact version will be sold for UAVs and helicopters, and a larger model for medium-altitude, long-endurance drones, ground surveillance and maritime patrol aircraft, Chaltiel said.

紧凑版本将被出售给无人机和直升机，较大版本将被出售给中高空，长航无人机，地面监视和海上巡逻机等。

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Compact Flash card. A storage medium for mobile devices.

移动设备使用的存储介质。

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That security could one day make SD cards as common a medium for distributing digital content as the compact disc is today.

FORBES: Ten O'Clock Tech: Stamp-Sized Storage

Ariane will put in orbit the really big telecommunications satellites, Soyuz will loft the medium-class spacecraft, and Vega will take care of the compact scientific payloads.

BBC: A rocket abroad - Soyuz in French Guiana