光学

The camera combines rugged reliability with unequalled optical performance and speed.

这款相机既坚固耐用，又有超凡的光学性能和快门速度。

optical instruments such as microscopes and telescopes

显微镜和望远镜等光学仪器

They concentrated on better definition of the optical image.

他们致力于提高该光学影像的清晰度。

Telescopes and microscopes are optical instruments.

望远镜和显微镜是光学仪器。

Physics studies mechanics , heat, light, sound and electricity.

物理学研究力学、热学 、 光学 、 声学和电学。