• In actual practice a brighter image is obtained by using a broad, rather than a point, source along with a substage condenser.

    实际工作中,不是光源而是用个扩展光源加一个台下聚光镜得到一个亮的

    youdao

  • In actual practice a brighter image is obtained by using a broad, rather than a point, source along with a substage condenser.

    实际工作中,不是光源而是用个扩展光源加一个台下聚光镜得到一个亮的

    youdao

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