focuser造句怎么写

2、The focuser has large anodized focuser knobs with rubber O-ring gripping surfaces for a firm grip and frostbite-free handling in cold weather.

4、This rotator device is still used today for all Takahashi focuser from the2” to4” focusers and all astrographs.

6、It exists in various versions, with individual or central focuser, with thick rubber armor or just a rubber skin, with - and without military reticle.

3、Optical focus is achieved by means of a mechanically ultra-smooth, backlash-free, precision 2" Crayford focuser-assembly."

1、This focuser offers fine and ultra-fine focusing adjustments.

5、There are cost focus seekers, who aim to obtain a local cost advantage over competition and differentiation focuser, who are looking for a local difference. [3]