首都加德满都的英国大使馆一幅围墙倒塌,压死3人。
Kathmandu, the capital of the United Kingdom Embassy of one wall collapsed, crushing 3.
分析表明,高幅值的残余压应力和“有效晶粒”细化是提高弯曲疲劳性能的主要因素。
The results of the analyses show that high residual compressive stress and fine scattered martensite units are the main cause of improving fatigue properties.
采用新型大功率器件IGBT研制了一台幅压供电直流电动机无级无触点起动器。
A stepless and contactless IGBT starter for amplitude voltage DC motor has been manufactured.
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