操作码缓存——以及一个操作码优化器，通常由相同的包提供——是一种加快站点响应的低成本技术。
An opcode cache — and an opcode optimizer, which is often provided in the same package — is a dirt-cheap technique to hasten the responsiveness of your site.
在园区网上我们采用了最新的MPEG - 4编解码技术对音视频进行压缩，较好的解决了有限成本前提下码流大小与媒体质量的平衡问题。
We compress the AV media with the MPEG-4 on the campus network and commendably solve the balance problem between bit rate size and media quality under the limited cost.
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