The spectrum radiance in bright and dark region of striation discharge is studied experimentally.

实验研究了条纹放电的明条纹和暗条纹中汞原子的谱线强度.

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The distensible effect of a circle - shape dark region light reflection from curved liquid surface was discovered.

发现了细棒润湿效应时弯曲液面上边界反射光场的圆形暗场扩张效应.

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The dark region of the underworld through which the dead must pass before they reach Hades.

埃里伯斯山南极洲罗斯岛上的火山,海拔3796.6米(12448英尺)

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