visible ray

基本解释

Because silicone is not visible on an X-ray or a CT scan, Dr. Raoof said, diagnosis is difficult without a biopsy.
罗孚说，因为硅胶无法在X射线或是CT扫描中被发现，若不用活组织检查很难诊断。
blog.sina.com.cn
Fractures above the right elbow, visible in an X ray, may have been made with the intent of breaking the arm apart.
在x光片上可以清楚地看到右手肘上面的裂缝，目的是为了将胳膊拆开。
http://www.iciba.com
The reflectivity to the visible and near infrared ray will be dropped as cellshpere is plated with metal such as silver and nickle.
空心微珠经过金属镀层处理后，对可见光、近红外的反射能力都有所下降。

But the flood of more visible cosmic -ray data makes it difficult to pick them out.
ENGADGET: NOvA neutrino detector captures cosmic rays in 3D, aims to unlock the mysteries of the universe
Only instead of amplifying visible light, it amplifies photons in the X-ray spectrum.
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But for a short-lived event such as a gamma-ray burst it means that the same blast may become visible again in the future.
ECONOMIST: An illuminating burst