答案来自于19世纪晚期威尔逊·a·本特利用显微镜照相术拍摄的雪花。
Bentley took more than 5, 000 photos of snowflakes using his photomicrography technique, with no two alike.本特利利用显微摄影技术,拍了5000多张雪花照片,而且没有两张图案是相同的。
The anodic processes of irondectrode in sulhric acid solutions are studied by using photomicrography and SEM techniques.利用显微照相和SEM技术研究了铁在硫酸溶液中的阳极过程。