干物镜
- 网络dry objective
干物镜-
刚才描述的油浸物镜与直径相同的干物镜相比，可容纳更宽的光线锥。
The oil-immersion objectives just described admit a wider cone of rays than a dry objective of the same diameter would .
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现代金相显微镜已普遍采用无限远光学系统设计，并广泛使用平场消色差物镜、广视场目镜、高倍干物镜；
Most modern metallurgical microscopes adopted the so-called infinity optical system design , in addition , plano-achromatic objectives , wide-field eyepieces , and high magnification dry objectives are widely used .