Conversely, psychological condition is really critical and we should try our best to cultivate a strong will with great composure in our life, study and work.

相反，心理素质的确非常重要，我们也应该倡导大家在平时的生活，学习和工作中不断地锻炼自己沉稳，不焦不躁的心理素质，唯有这样才可以历炼艰难困苦而不倒，实现自己的人生价值。

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There are different critical speeds with different cutting condition and different matching of cutter and work-piece material.

不同刀具材料与工件材料的匹配在不同切削条件下有不同的临界速度。

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The girls' father, Mohammed Riaz, who is believed to work at a plastics factory in Blackburn, survived the fire but is in a critical condition in the specialist burns unit at Manchester's Wythenshawe Hospital after being resuscitated by firefighters.

BBC: NEWS | UK | England | Lancashire | Town mourns fire tragedy deaths