焦距

Determine the focal length of your lens.

决定你镜头的焦距。

Automatic image alignment and focal length detection can also be adjusted interactively.

自动图像对准焦距的检测也可以调整的交互。

For most lenses this condition is satisfied at about 100 times the focal length.

对多数镜头而言，大约100倍焦距的物距时，入射光满足这一条件。

For most le es this condition is satisfied at about 100 times the focal length.

对多数镜头而言，大约100倍焦距的物距时，入射光满足这一条件。

All rays passing Through the lens have similar focal length.

所有的射线穿过晶体也有类似的焦距。

However, in the case of long focal length eyepieces, the increase can be significant and not without performance consequences.

不过，在案件长焦距eyepieces ，所增加，可显着和不无业绩的后果。

With short focal length eyepieces the effect is negligible.

与短焦距eyepieces的影响是微不足道的。

By numerical calculation, the effect on the errors due to image processing, calibration of effective focal length and basic line is discussed.

通过数值计算分析了图像处理误差、有效焦距和基线标定误差对测量方法的影响。

B exceeds, X line, examine before applying at each groups of art, groovy examination and B exceed those who measure line of focal length, directive fixed position is affirmatory. B of C group application exceeds in having method, monitor reach B to exceed interpose of the posture that monitor to discharge stone.

方法将85例肾盂结石患者分为三组，A组29例采取俯卧位，B组28例采取健侧倾斜俯卧位，C组28例采取俯卧位改变健侧倾斜俯卧位，分别在相应体位下进行ESWL术。B超、X线、检验应用于各组术前常规检查及B超测量焦距、指导定位线的确定。C组应用B超进行术中监测及B超监测体位干预排石。

In order to accurately measure the focus of lens, the position of focal plane must be firstly determined.

而要精确测量焦距，必须先准确地检测出焦面的位置。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。