1、The focal length is set to Flat stitch in the Properties window.
焦距在特性窗囗中被設(shè)定成平坦的一針。

2、the ratio of the focal length to the diameter of a (camera) lens system.
相機鏡頭直徑焦距比。

3、Keep in mind that changing focal length will require refocusing in most zoom lenses.
要注意的是，對于大多數(shù)變焦鏡頭來說，焦距改變了，就得重新對焦。

4、Set the focal length on your lens.
給你的鏡頭設(shè)置焦距。

5、Determine the focal length of your lens.
決定你鏡頭的焦距。

6、the ratio of the focal length to the diameter of a (camera) lens system
相機鏡頭直徑焦距比。

7、For the first shot he used a shorter focal length and the second shot he used a longer one.
先前的一張焦距短，第二張他用了長焦。

8、Focal length is the distance between optical centre and principal focus.
焦距就是鏡片中心和焦點之間的距離。

9、The diameter of a sphere is four times the focal length of a concave mirror cut from it.
凹面鏡如果是從圓球上切下來的，圓球的直徑會是凹面鏡焦距的四倍。

10、Zoom lens a lens whose focal length can be varied continuously over a substantial range.
變焦鏡頭可以把焦矩在相當(dāng)大的范圍內(nèi)連續(xù)改變的鏡頭。

11、The aperture size of a lens could be calculated from focal length and the correspondent f-number.
光圈孔的大小，可從鏡頭的焦距與焦距比數(shù)中計算出來。

12、But once you have the focal length determined, everything else is a piece of cake.
但是，一旦你確定了焦距，其他事情就不值一提了。

13、This is the ratio of the focal length of the telescope to its aperture.
這是指望遠(yuǎn)鏡的焦距與其孔徑的比值。

14、The focal length of the camera lens plays an important role in photo criteria.
攝影機鏡頭的焦距在攝影規(guī)范中起著重要的作用。

focal length翻譯