The test results come out, there is a very expensive AL-M alloy.
化验结果出来了,这是一种很贵重的铝镁合金!
Wood, J. M. , et al. , " Effects of the 1989 San Francisco earthquake on frequency and content of nightmares. " J Abnorm Psychol, 1992. 101(2): p. 219-24.
等〈 1989年旧金山大地震对恶梦发生频率以及恶梦的内容的影响〉 《变态心理学期刊》,1992。101(2):219-24页。
The normalized total gradient method of gravity presented by V. M. Berezkin et al is a method for determining field source and density interface by means of gravity data.
等人提出的重力归一化总梯度法是一种利用重力数据来确定场源以及密度分界面的方法。
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