“他用他的摄影机来设计，”斯魁尔说，“在以一名软焦距摄影师的身份开始工作后，他经受住了人们的关注并对这项领域产生巨大的影响。”
"He was designing with his camera," Squiers says, "and after starting out as a [soft-focus] pictorialist, he brought sharp focus to bear and had a tremendous effect on the field."
这种相机不仅能拍摄出更加栩栩如生的照片，更为重要的是，它允许用户在拍照后对照片焦距进行调整。
That makes for more vibrant photos, but most importantly, it allows users to change the focus within an image after it's been taken.
实验测量了经单一锗透镜聚焦后的CO_2激光束的腰斑半径和位置，同时确定了聚焦锗透镜的焦距，其结果与实际情况一致。
The radius and position of waist spot of CO2 laser beam focused by a single Ge lens were measured experimentally, and the focal length of the Ge lens was determined. The result is in agreement w...
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