预先压缩

precompression

预先的英语翻译：

beforehand; in advance; pre-requisite; ready; up front
【经】 in advance; in anticipant

压缩的英语翻译：

compress; boil down; constrict; press; reduce; strangulate; condensation
【计】 compaction; compressing; compression; compresspor; pack
【化】 compression
【医】 compress; compression; squeeze