This kind of tools mainly consists of lifting control system, safety joint, stabilizer, inner and outer barrels, full-closed core catcher, and coring bit.

该工具主要由提升控制系统、安全接头、稳定器、内外筒、全闭式岩心爪和取心钻头等部件组成。

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In the past few years, it has closed down under-performing and non-core sites like social bookmarking service Delicious, search engine AltaVista, online news aggregator Buzz, and social network MyBlogLog.

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Overall, the group feels that AMD has at least closed the gap a bit on Intel's Core juggernaut with a much better FX offering this time around, but overall the desktop CPU landscape remains unchanged -- with Intel still firmly at the top of the heap.

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It stands in contrast to the closed or proprietary systems of Microsoft and Apple who restrict access to the core or source code for their operating systems.

BBC: China to create home-grown operating system