论文信息 - Characteristics of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si8.svg"><mml:mrow><mml:mo>〈</mml:mo><mml:mi>a</mml:mi><mml:mo>〉</mml:mo></mml:mrow></mml:math> screw dislocations and their slip on prismatic and pyramidal planes in pure <mml:math xmlns:mml="http://www.w3.org/1998/