您要查找的是不是：
- A typical lens has a focal length(f)of 625 mm. 常見(jiàn)鏡頭的焦距（f）為625毫米。
- Determine the focal length of your lens. 決定你鏡頭的焦距。
- C: Can I control the focal length? 我能控制焦距嗎?
- What is the best focal length for bird photography? 拍攝鳥(niǎo)兒最適合的焦距長(cháng)度是多少?
- The focal length of a given lens is different for different colors. 一個(gè)特定的透鏡的焦距因顏色的不同而不同。
- The focal length is set to Flat stitch in the Properties window. 焦距在特性窗囗中被設定成平坦的一針。
- This photogragh is shot by lens with a long focal length. 這張照片是用長(cháng)鏡頭拍攝的。
- 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范中起著(zhù)重要的作用。
- Focal length The distance between the centre of a lens and its principal focus. 鏡頭中心與其主焦點(diǎn)的距離。
- The solid tunable focal length microlens in our study is still a prototype. 本研究所提出之固態(tài)調焦透鏡兼具微小化、積體化、可單一或陣列使用、及系統整合性高等優(yōu)點(diǎn)。
- Here the combinations of Testcharts and measuring objectives for different focal length ranges are preset. 在這里預置不同焦距范圍的測量物鏡與測試圖表之間的組合。
- Spot diameters of just a few thousands of an inch can readily be attained with convenient short focal length lenses. 用普通的短焦距透鏡不難得到直徑只有幾十微米的光點(diǎn)。
- The focal length of the conelensing lens should be such that the image of the source just fills the projecting lens. 聚光透鏡的焦距應使光源的像正好照滿(mǎn)放映透鏡。
- A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters. 屈光度透鏡或棱鏡折光率的一種量度，等于以米計算焦距之倒數
- As a result, the focal lengths in these planes will be different. 結果，這兩個(gè)平面內的焦距將不同。
- In taking a picture, the shutter,the focal length and the other things must be adjusted as the case may be. 在拍照過(guò)程中，快門(mén)、焦距等等必須按實(shí)際情況加以調整。
- In order to be able to evaluate a large focal length range, different converter lenses must be used. 為了能夠計算較大的焦距范圍,根據焦距的大小必須使用不同的轉換透鏡。
- Objective and the focal length of the specimen to be measured. The measurement of the size of the reticle. 十字線(xiàn)的像的尺寸取決于準直儀物鏡的焦距和待測樣品的焦距。
- Notice the difference in the apparent distance of objects that each focal length produces. 注意每種焦距所產(chǎn)生的物體視距的差異。
- The unsteadiness of air becomes prohibitive only if instruments with large focal length are used. 只有在使用長(cháng)焦距的儀器時(shí)，才不允許空氣的不穩定。
