Constructed of hardened materials with optional hard facing.

有硬化材料构造而成，配置备选硬面。

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The results show that hard facing layer have high hardness, anti wear performance and suitability.

结果表明，圆点状堆焊层具有较高的硬度、耐磨性及适用性。

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So it is hard to muster sympathy for lawyers facing a tighter labour market.

因此，让人很难同情那些面临日益严苛的劳动力市场的律师。

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She says she wants the students to know that even when facing hard times, they can succeed.

VOA: special.2009.01.28

"Here you are facing a very hardened sort of fighters, who are die-hard,".

VOA: standard.2009.06.18

Yettaw was facing seven years of hard labor for an uninvited visit to Aung San Suu Kyi's house where she has been detained for most of the last two decades despite international pressure for her release.

VOA: standard.2009.11.02

That was the hard question facing Gearbox.

FORBES: From 'CodeHunters' To 'Aliens: Colonial Marines': Gearbox Is One Of The Most Controversial Studios In The Business

If the swap works, and the border stays calm, Hizbullah will find itself facing hard choices.

ECONOMIST: Hizbullah and Israel

At the event in Springfield, Virginia, McCain hit Obama hard on issues facing seniors.

CNN: Obama, McCain campaign through swing states