长时间扩散退火可有效地提高粉末锻造钢的韧性。
Toughness of powder forging steel can be increased efficiently by diffusion annealing in longer time.
发现长时间扩散退火可显著提高粉末锻件的冲击韧性。
It is found that shock toughness of powder forging part can be increased obviously by diffusion annealing for long time.
有目的的人可以通过一座狭窄的桥，而植物和动物的缓慢扩散则需要一条像大陆一样的道路，而且需要很长时间才能使用。
Whereas purposeful men could make their way across a narrow bridge, the slow diffusion of plant and animals would require an avenue as a continent and available for ages at a stretch.
报告了我们在弹道扩散的产生条件、起源和长时间效应方面的工作。
Our works for the condition, origin and dynamical effects of ballistic diffusion are reported.
韩国加紧参加美国领导的中断大规模杀伤性武器扩散的国际项目，韩国长时间避免参加，为了避免激怒平壤。
South Korea is upgrading its participation in a U. S., led international campaign to disrupt the traffic of weapons of mass destruction, a step it long avoided to prevent angering Pyongyang.
韩国加紧参加美国领导的中断大规模杀伤性武器扩散的国际项目，韩国长时间避免参加，为了避免激怒平壤。
South Korea is upgrading its participation in a U. S., led international campaign to disrupt the traffic of weapons of mass destruction, a step it long avoided to prevent angering Pyongyang.
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