无论是微小水滴还是飞溅的水花，确定你的目标焦点，并相应地对准相机焦距。
Make sure you know what you're aiming to focus on, either the droplet or the resulting splash and aim your camera and focus accordingly.
焦距：焦点平面，焦距和景深。
焦距：镜头中心与其主焦点的距离。
Focal length: The distance between the centre of a lens and its principal focus.
定点是焦点，两焦点的距离是焦距。
Focal point is, the distance between the two is the focus of the focal length.
这种弯曲的能量传递表面限定焦点(8)和焦距(9)。
This curved energy transmission surface defines a focal point (8) and a focal length (9).
一旦你选择一个镜头其焦距是最接近于你成像系统所需之焦距，你需要调较工作距离去获取观察目标物的焦点。
Once you choose a lens whose focal length is closest to the focal length required by your imaging system, you need to adjust the working distance to get object under inspection in focus.
对焦点位于波导外部(包括端面)的情况给出了一种精确测量焦距新方法。
It is the method that the focal of waveguide lens can be measured precisely, its error depends on the precision of reading microscope.
焦距就是镜片中心和焦点之间的距离。
Focal length is the distance between optical centre and principal focus.
同时劲科科技可以根据客户要求制作多焦点和负焦距透镜，也可根据客户需求进行加工、镀膜各类透镜，下面是我们对各类透镜的生产要求。
Meanwhile, Jinke Technology can produce multi-focus and negative focus lens and can provide processing and coating on various lens according to the customers' requirements.
同时劲科科技可以根据客户要求制作多焦点和负焦距透镜，也可根据客户需求进行加工、镀膜各类透镜，下面是我们对各类透镜的生产要求。
Meanwhile, Jinke Technology can produce multi-focus and negative focus lens and can provide processing and coating on various lens according to the customers' requirements.
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