Steel H13 (AISI) is one of materials which is widely used in making hot -working die.

H13(美国钢号)是使用最广泛的热作模具钢之一。

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A new type of austenite hot working die steel added copper is presented in this paper.

提出了一种新型的含铜奥氏体热作模具钢。

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Results showed that effect of using the hot spray-welding process to strengthening the hot-working die steel surface was good.

结果证明采用热喷焊工艺对热作模具钢表面进行强化的效果优良。

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Cambodia is working to reduce the number of women who die in childbirth and to lower the number of infants and children under age five who die.

VOA: standard.2009.11.10

As for well-being, other studies show that elderly people who stop working tend to die sooner than their peers who labour on.

ECONOMIST: Affluence

The old approach of working hard for a living will die.

FORBES: Why Romney And Obama Can't Fix The Unemployment Problem

Babies born to working-class mothers were twice as likely to die before their first birthday as those with middle-class parents.

BBC: NEWS | Health | More tiny babies being born in UK