请帮忙翻译下high magnification of a fracture will sh ...? a high magnification of a fracture will show little, for the rough surface cannot be brought into focus; some parts will be too near and other parts too far from the microscope 粗糙的表面上一部分里显微镜太近,而又有其它部分里显微镜太远,不利于聚焦,导致高倍放大时几乎不能成清晰的像。查看更多